Glossary

This glossary defines the key technical and conceptual terms used throughout the textbook. Entries are alphabetized by the first significant word. For contested terms, definitions are descriptive: they explain how the term is used in political science and law without endorsing any partisan framing.

Cross-references point to the chapter where the concept is introduced or developed. When a term is treated in multiple chapters, the cross-reference points to the most extensive discussion.

501(c)(3). A tax-exempt nonprofit organization classified under Section 501(c)(3) of the Internal Revenue Code. Donations are tax-deductible, but the organization is prohibited from intervening in political campaigns and is limited in lobbying. See Ch. 24.

501(c)(4). A tax-exempt "social welfare" organization under Section 501(c)(4). May engage in unlimited lobbying and limited political activity, and is not required to disclose donors — a structure that makes it a common vehicle for what is colloquially called "dark money." See Ch. 34.

527 organization. A tax-exempt political organization formed primarily to influence elections. Disclosure rules are tighter than for 501(c)(4)s, and 527s cannot expressly advocate for or against a candidate without becoming subject to FEC limits. See Ch. 34.

Absentee ballot. A ballot cast by mail or in person before Election Day, originally for voters unable to vote in person. Many states have expanded access to absentee voting beyond traditional excuse requirements. See Ch. 36.

Actual malice. The constitutional standard from New York Times Co. v. Sullivan (1964): a public official suing for defamation must prove the statement was made with knowledge of its falsity or with reckless disregard for the truth. See Ch. 5.

ActBlue. A nonprofit fundraising platform used predominantly by Democratic candidates and progressive causes to process online contributions. See Ch. 21, Ch. 34.

Administrative state. The collection of federal agencies, regulations, and bureaucratic processes through which executive branch policy is implemented; sometimes used neutrally as a description and sometimes as a critique of regulatory expansion. See Ch. 11.

Advice and consent. Article II, Section 2 power giving the Senate authority to confirm or reject presidential nominations and ratify treaties (treaties require a two-thirds vote). See Ch. 9.

Affective polarization. Polarization measured by emotional dislike of the opposing party rather than disagreement on issues. Distinct from ideological polarization. See Ch. 25.

Agency capture. The phenomenon in which a regulatory agency comes to advance the interests of the industry it regulates rather than the public interest. See Ch. 11, Ch. 24.

Agenda-setting. The process by which media coverage and political actors elevate certain issues into public consciousness, shaping what people consider important. See Ch. 18, Ch. 33.

Amendment process. The Article V process for changing the Constitution: proposal by two-thirds of both houses of Congress (or a convention called by two-thirds of states), followed by ratification by three-fourths of state legislatures (or conventions). See Ch. 3.

American National Election Studies (ANES). A long-running academic survey of American political attitudes and behavior conducted at presidential elections since 1948. See Ch. 17.

Anti-commandeering doctrine. The constitutional rule, articulated in Printz v. United States (1997) and related cases, that the federal government cannot compel states or state officers to administer federal programs. See Ch. 4.

Appellate jurisdiction. A court's authority to review the decisions of lower courts. The Supreme Court's docket is almost entirely appellate. See Ch. 12, Ch. 14.

Approval voting. An electoral system in which voters can mark approval for any number of candidates and the candidate with the most approvals wins. Used in some U.S. local elections. See Ch. 38.

Article I. The constitutional article establishing Congress, enumerating its powers (taxation, commerce, war declaration, etc.) and procedures. The longest article, reflecting the Founders' expectation that Congress would be the dominant branch. See Ch. 3, Ch. 7.

Article II. The constitutional article establishing the presidency, defining executive power, the election method, and presidential duties. See Ch. 3, Ch. 9.

Article III. The constitutional article establishing the federal judiciary. It creates the Supreme Court and authorizes Congress to establish lower federal courts; defines the categories of cases federal courts may hear. See Ch. 3, Ch. 12.

Article V. The amendment article — see Amendment process. See Ch. 3.

Articles of Confederation. The first U.S. governing document (1781–1789), under which the federal government had no taxing power, no executive, and no national judiciary. Replaced by the Constitution. See Ch. 2, Ch. 3.

Asymmetric federalism. A federal system in which different subnational units have different powers or relationships to the national government. The U.S. has limited asymmetric features (e.g., territorial status). See Ch. 4.

Australian ballot. The secret ballot, printed at government expense, listing all candidates. Adopted in U.S. states in the late 19th century. See Ch. 36.

Backbencher. A legislator without leadership or committee chair responsibilities; a rank-and-file member. See Ch. 8.

Balance of power. A core principle in international relations and in domestic separation-of-powers theory: institutions are designed so that no single actor can dominate. See Ch. 3, Ch. 32.

Ballot initiative. A direct-democracy mechanism by which citizens can place proposed laws or constitutional amendments on the ballot. Available in roughly half of U.S. states. See Ch. 15.

Bicameralism. A two-chamber legislature. The U.S. Congress consists of the House and the Senate; bicameralism creates an internal check on lawmaking. See Ch. 7.

Bipartisan Campaign Reform Act (BCRA, McCain-Feingold). 2002 statute restricting "soft money" contributions to national political parties and regulating "electioneering communications." Substantially weakened by Citizens United (2010). See Ch. 34.

Bill of Rights. The first ten amendments to the Constitution, ratified in 1791, protecting individual liberties and limiting the federal government. See Ch. 5, Appendix B.

Block grant. A federal grant providing funds to state or local governments for general purposes within broad categories, with relatively few federal restrictions. Contrasts with categorical grants. See Ch. 4.

Blue slip. A century-old Senate Judiciary Committee tradition allowing a senator to signal opposition to a federal judicial nominee from the senator's home state, often delaying or blocking the nomination. See Ch. 13.

Bostock v. Clayton County (2020). Supreme Court decision holding that Title VII of the Civil Rights Act prohibits employment discrimination based on sexual orientation or gender identity. See Ch. 6.

Brandenburg v. Ohio (1969). The Supreme Court case establishing the modern incitement standard: speech may be punished only if it is directed to inciting imminent lawless action and likely to produce it. See Ch. 5.

Brown v. Board of Education (1954). The Supreme Court decision overturning Plessy v. Ferguson and holding that racial segregation in public schools violates the Equal Protection Clause. See Ch. 6, Appendix E.

Bruen. New York State Rifle & Pistol Association v. Bruen (2022), the Supreme Court decision establishing a "history and tradition" test for Second Amendment regulations. See Ch. 5.

Buckley v. Valeo (1976). The foundational campaign finance decision: contribution limits are constitutional, but limits on a candidate's own spending or independent expenditures violate the First Amendment. Established that "money is speech" for constitutional purposes. See Ch. 34.

Bully pulpit. Theodore Roosevelt's term for the president's platform to shape public opinion and pressure other actors. See Ch. 9.

Bundler. An individual who collects contributions from many donors and presents them to a campaign as a package, gaining influence proportional to the bundle's size. See Ch. 34.

Bureaucracy. The career civil service that implements federal law and regulations; sometimes used neutrally and sometimes pejoratively. See Ch. 11.

Byrd Rule. A Senate procedural rule limiting what can be included in a budget reconciliation bill to provisions with direct budgetary effects. See Ch. 8, Ch. 16.

Cabinet. The heads of the 15 executive departments plus other officials accorded cabinet rank. Largely an advisory body; its actual influence varies enormously by administration. See Ch. 10.

Campaign finance disclosure. The legal requirement that candidates and committees report contributions and expenditures to the FEC and the public. See Ch. 34.

Canvassing. Door-to-door voter contact by campaigns, parties, or movements. Considered the most effective form of voter persuasion. See Ch. 21.

Carpenter v. United States (2018). Supreme Court decision holding that warrantless acquisition of cell-site location records violates the Fourth Amendment. See Ch. 5.

Categorical grant. A federal grant for a specific, narrowly defined purpose with detailed conditions. Contrasts with block grants. See Ch. 4.

Caucus. (1) An informal organization of legislators sharing common interests (e.g., the Congressional Black Caucus). (2) A nominating contest in which voters meet and openly express preferences, used in a small number of states. See Ch. 8, Ch. 19.

Certiorari (cert). The discretionary writ by which the Supreme Court agrees to hear a case. Granted when at least four Justices vote in favor (the "rule of four"). See Ch. 14.

Checks and balances. The constitutional mechanism by which each branch can constrain the others (e.g., presidential veto, Senate confirmation, judicial review). Distinct from but related to separation of powers. See Ch. 3.

Chevron deference. The doctrine, from Chevron U.S.A. v. NRDC (1984), that courts should defer to a federal agency's reasonable interpretation of an ambiguous statute the agency administers. Largely overturned by Loper Bright Enterprises v. Raimondo (2024). See Ch. 11.

Citizens United v. FEC (2010). Supreme Court decision holding that the First Amendment prohibits restrictions on independent political expenditures by corporations and unions. The trigger for the rise of super PACs. See Ch. 34, Appendix E.

Civil liberties. Protections against government interference with individual freedoms, primarily grounded in the Bill of Rights (e.g., speech, religion, due process). See Ch. 5.

Civil rights. Protections against discriminatory treatment, primarily grounded in the Reconstruction Amendments and civil rights statutes (e.g., equal protection, voting rights, anti-discrimination law). Distinct from civil liberties. See Ch. 6.

Civil service. The career federal workforce, hired by merit and protected from political dismissal. See Ch. 11.

Closed primary. A primary election in which only registered party members may vote in that party's primary. See Ch. 19.

Cloture. The Senate procedure (Rule XXII) for ending debate. Currently requires 60 votes for most legislation; nominations require a simple majority. See Ch. 8.

Coalition government. A government formed by two or more parties that together hold a majority. Common in parliamentary systems with proportional representation; rare in U.S. politics. See Ch. 39.

Code of Federal Regulations (CFR). The compilation of all federal regulations, organized by subject. See Ch. 11.

Cohabitation. In semi-presidential systems (notably France), the situation in which the president and prime minister come from different parties. See Ch. 39.

Commerce Clause. Article I, Section 8, Clause 3: Congress's power "to regulate Commerce with foreign Nations, and among the several States." Among the most important and contested clauses in the Constitution. See Ch. 4.

Compactness. A measure of how geographically compact a legislative district is. A common (but imperfect) test for whether a district has been gerrymandered. See Ch. 35.

Competitive district. A district where neither party has a structural advantage of more than a few percentage points; competitive districts have become increasingly rare. See Ch. 35.

Concurring opinion. A judicial opinion that agrees with the majority's outcome but for different reasons. See Ch. 14.

Confederation. A system in which sovereign states form a loose union and delegate limited powers to a central government. The U.S. tried this under the Articles of Confederation. See Ch. 2.

Conference committee. A temporary joint committee that reconciles differences between House and Senate versions of a bill. See Ch. 8.

Congressional Budget Office (CBO). A nonpartisan congressional agency that scores legislation's budgetary effects. See Ch. 16.

Congressional Research Service (CRS). A nonpartisan congressional research arm that prepares reports for members. See Ch. 8.

Constitution. The supreme law of the United States, ratified in 1788; consists of seven articles plus 27 amendments. See Ch. 3, Appendix A.

Constitutional convention. (1) The 1787 Philadelphia gathering that drafted the Constitution. (2) An Article V convention called by two-thirds of states to propose amendments — never invoked. See Ch. 2, Ch. 3.

Constitutional hardball. A term coined by Mark Tushnet for actions that are technically within the rules but violate longstanding norms — e.g., refusing to hold confirmation hearings, mid-decade redistricting. See Ch. 37.

Continuing resolution (CR). A temporary spending bill that keeps the government funded at existing levels when Congress fails to pass appropriations on time. See Ch. 16.

Cook Partisan Voting Index (PVI). A measure of how a district's vote in the last two presidential elections compares with the national average. R+5 means the district is 5 points more Republican than the country. See Ch. 17, Ch. 35.

Cooperative federalism. A model of federalism (dominant from the New Deal through the 1970s) in which national, state, and local governments work jointly on policy. Compare Dual federalism. See Ch. 4.

Cordon sanitaire. A coalition strategy in which mainstream parties refuse to govern with parties they consider extremist; common in some European democracies. See Ch. 39.

Coordinated communication. A communication that is "coordinated" with a candidate or party, making it a contribution subject to limits, rather than an independent expenditure. See Ch. 34.

Court packing. Expanding the size of the Supreme Court for political purposes. The court has had nine seats since 1869; FDR famously proposed expansion in 1937 and failed. See Ch. 14, Ch. 38.

Cracking. A gerrymandering technique that splits a community of voters across many districts to dilute their voting power. See Ch. 35.

Critical election. An election that produces a major realignment of party coalitions (e.g., 1860, 1932, 1968 in different theories). See Ch. 19.

Critical thinking about media. The skill of evaluating sources, distinguishing reporting from opinion, identifying framing, and recognizing bias. See Ch. 18.

Cross-pressured voter. A voter whose group memberships push toward different parties (e.g., a religiously conservative union member). See Ch. 22.

Crosstab. In survey research, the cross-tabulation of one variable against another (e.g., voting intent by age group). See Ch. 17, Appendix F.

Dark money. Political spending by groups that do not disclose their donors — typically 501(c)(4)s and similar. Not a legal term but a journalistic and academic shorthand. See Ch. 34.

Data Trust. A Republican-aligned voter data cooperative used by GOP campaigns and committees; counterpart to NGP VAN on the Democratic side. See Ch. 21.

Debt ceiling. A statutory limit on the total amount of federal debt. Congress must raise it periodically; brinkmanship over the ceiling has produced periodic crises. See Ch. 16.

Declaration of Independence. The 1776 document, drafted primarily by Thomas Jefferson, declaring the colonies' separation from Britain and articulating Lockean principles of natural rights and government by consent. See Ch. 2, Appendix C.

Demographic crosstab. Polling data broken down by demographic categories (age, race, education, etc.). See Ch. 17, Appendix F.

Democratic backsliding. The gradual erosion of democratic institutions, often through legal means rather than coups. See Ch. 37.

Democratic erosion. Synonym for democratic backsliding; emphasizes the slow, incremental character of the process. See Ch. 37.

Discretionary spending. Federal spending Congress authorizes annually through appropriations bills; covers about a third of the federal budget (defense, education, etc.). Compare Mandatory spending. See Ch. 16.

Disparate impact. A legal theory under which a facially neutral practice can be discriminatory if it produces unequal outcomes by protected category. Recognized in employment law (Title VII) but contested in other domains. See Ch. 6.

Disparate treatment. Intentional discrimination on the basis of a protected category. See Ch. 6.

Dissenting opinion. A judicial opinion disagreeing with the majority's outcome. Has no legal force but can shape future doctrine. See Ch. 14.

District court. The trial-level court of the federal system. There are 94 federal district courts. See Ch. 13.

Divided government. A configuration in which one party controls the presidency and the other controls at least one chamber of Congress. The modern norm. See Ch. 9.

Dobbs v. Jackson Women's Health Organization (2022). Supreme Court decision overturning Roe v. Wade and Planned Parenthood v. Casey, returning abortion regulation to the states. See Ch. 5, Ch. 14, Appendix E.

Donor disclosure. The legal requirement that political donations be reported publicly. Disclosure rules vary widely by type of organization. See Ch. 34.

Double jeopardy. The Fifth Amendment protection against being prosecuted twice for the same offense by the same sovereign. See Ch. 5.

Drop box. A secure receptacle for absentee ballots. Used widely in Western states; politically contested elsewhere. See Ch. 36.

Dual federalism. A model of federalism (dominant before the New Deal) in which national and state governments operate in separate spheres ("layer cake federalism"). Compare Cooperative federalism. See Ch. 4.

Due Process Clause. The clauses in the Fifth and Fourteenth Amendments prohibiting deprivation of "life, liberty, or property, without due process of law." Includes both procedural due process (fair procedures) and substantive due process (fundamental rights). See Ch. 5.

Duverger's Law. The political-science generalization that single-member-district plurality elections tend to produce two-party systems, while proportional representation tends to produce multiparty systems. See Ch. 19.

Early voting. In-person voting before Election Day. Available in most states. See Ch. 36.

Earmark. A provision directing specific funds to a specific project or recipient; banned during much of the 2010s, partially restored. See Ch. 16.

Efficiency gap. A measure of partisan gerrymandering: the difference between the parties' "wasted votes" (votes for losers plus surplus votes for winners), divided by total votes. See Ch. 35.

Eighth Amendment. Prohibits cruel and unusual punishment and excessive bail. See Ch. 5.

Electioneering communication. Broadcast advertising that mentions a federal candidate within 60 days of a general election or 30 days of a primary. Subject to disclosure rules under BCRA. See Ch. 34.

Election certification. The formal process by which election results are certified by state officials and (for the presidency) by Congress. See Ch. 36, Ch. 37.

Electoral College. The Article II mechanism for selecting the president: each state gets electors equal to its total congressional delegation; the candidate with 270 of 538 wins. See Ch. 20, Appendix G.

Electoral vote. A vote cast by a member of the Electoral College. The 538 electoral votes are allocated state by state, almost all on a winner-take-all basis. See Ch. 20.

Eligible voter. A person legally entitled to vote (a U.S. citizen of voting age, not disqualified by felony or other state-specific rules). Distinct from registered voter. See Ch. 22.

EOP. See Executive Office of the President. See Ch. 10.

Equal Protection Clause. The Fourteenth Amendment provision that no state shall "deny to any person within its jurisdiction the equal protection of the laws." See Ch. 6.

Establishment Clause. The First Amendment prohibition on government establishing religion. See Ch. 5.

Exclusionary rule. The judicially created remedy excluding evidence obtained in violation of the Fourth Amendment from criminal trials. See Ch. 5.

Executive agreement. An international agreement entered by the president without Senate ratification. Has the force of law but can be rescinded by a future president. See Ch. 32.

Executive order. A directive from the president to executive branch officials; carries the force of law within the limits of statutory and constitutional authority. See Ch. 9, Ch. 11.

Executive Office of the President (EOP). The set of staff offices supporting the president (e.g., White House Office, NSC, OMB). Created in 1939; greatly expanded since. See Ch. 10.

Executive privilege. The asserted right of the president to withhold information from Congress and the courts. Recognized as constitutionally grounded but subject to limits (United States v. Nixon, 1974). See Ch. 9.

Exit poll. A survey of voters conducted as they leave polling places, used to project results and analyze voting behavior. Less reliable in an era of widespread early and mail voting. See Ch. 17.

Faction. James Madison's term in Federalist 10 for groups motivated by passion or interest contrary to the rights of others or the public good. The Constitution's design tries to manage rather than eliminate factions. See Ch. 2.

Faithless elector. A presidential elector who votes for someone other than the candidate to whom the elector is pledged. Most states now legally bind electors. See Ch. 20.

FARA. The Foreign Agents Registration Act, requiring agents of foreign principals to register and disclose their activities. See Ch. 24.

Federal budget. The president's proposed and Congress's enacted plan for federal taxing and spending. See Ch. 16.

Federal Election Campaign Act (FECA). The 1971 statute (substantially amended in 1974) creating the modern federal campaign finance regulatory regime and the FEC. See Ch. 34.

Federal Election Commission (FEC). The independent regulatory agency that enforces federal campaign finance law. Six commissioners, evenly split by party — a structure that frequently produces deadlock. See Ch. 34.

Federal preemption. The doctrine that federal law overrides conflicting state law under the Supremacy Clause. See Ch. 4.

Federal Register. The daily publication of federal agency actions, including proposed and final rules. See Ch. 11.

Federalism. The constitutional division of authority between the national government and the states. See Ch. 4.

Federalist Papers. A series of 85 essays by Hamilton, Madison, and Jay (1787–1788) urging ratification of the Constitution. Federalist 10, 51, 70, and 78 are particularly important. See Ch. 2, Appendix D.

Felon disenfranchisement. The denial of voting rights to people convicted of felonies. Rules vary widely by state. See Ch. 36.

Fifteenth Amendment. Ratified 1870; prohibits denial of voting rights based on race, color, or previous condition of servitude. See Ch. 36.

Fifth Amendment. Includes protections against double jeopardy and self-incrimination, the Due Process Clause (federal), and the Takings Clause. See Ch. 5.

Filibuster. A Senate procedure allowing extended debate that can prevent a vote unless 60 senators invoke cloture. Originally rare; now invoked routinely. See Ch. 8.

First Amendment. Protects the freedoms of speech, press, religion, assembly, and petition. See Ch. 5.

First-past-the-post (FPTP). An electoral system in which the candidate with the most votes wins, regardless of whether they have a majority. See Ch. 19.

Fiscal federalism. The use of federal grants and conditions to influence state and local policy. See Ch. 4.

Floor leader. The senator or representative elected by their party caucus to lead floor strategy (the Majority Leader and Minority Leader). See Ch. 8.

Focusing event. A sudden, dramatic event that opens a policy window (e.g., 9/11, Hurricane Katrina). See Ch. 33.

Fourteenth Amendment. Ratified 1868; defines citizenship and contains the Due Process and Equal Protection Clauses applied to the states. The legal foundation of most modern civil rights law. See Ch. 6.

Fourth Amendment. Protects against unreasonable searches and seizures and requires warrants based on probable cause. See Ch. 5.

Free Exercise Clause. The First Amendment protection of religious practice. See Ch. 5.

Freedom House. A U.S.-based NGO that publishes annual scores of political rights and civil liberties for every country. See Ch. 39.

Freedom of Information Act (FOIA). The 1966 statute giving the public a right to request federal agency records. See Ch. 11.

Full Faith and Credit Clause. Article IV, Section 1, requiring states to honor each other's "public Acts, Records, and judicial Proceedings." See Ch. 4.

Garbage-can model. John Kingdon's variant on the policy-process model emphasizing that problems, solutions, and political opportunities float around independently and occasionally combine. See Ch. 33.

General Accountability Office (GAO). An independent congressional agency that audits federal programs. See Ch. 11.

Gerrymandering. Drawing district lines to favor one party (partisan gerrymandering), one race (racial gerrymandering), or one incumbent. See Ch. 35.

Gideon v. Wainwright (1963). Supreme Court decision establishing the right to counsel for indigent criminal defendants. See Ch. 5.

GOTV (Get Out The Vote). The campaign effort to ensure that supporters actually vote. The final phase of any campaign. See Ch. 21.

Grand jury. A jury that decides whether to indict a defendant; required by the Fifth Amendment for federal felonies. See Ch. 5.

Grants-in-aid. Federal funds transferred to state and local governments. See Ch. 4.

Hamiltonian. Pertaining to Alexander Hamilton's vision of a strong national government, energetic executive, and integrated commercial economy. Contrasts with Jeffersonian. See Ch. 2.

Hard money. Contributions subject to federal limits and disclosure, made directly to candidates and parties. Contrast with soft money. See Ch. 34.

Hastert Rule. An informal Republican House practice that the Speaker should not bring legislation to the floor without "a majority of the majority." See Ch. 8.

Heller. District of Columbia v. Heller (2008), the Supreme Court decision recognizing an individual right under the Second Amendment to keep firearms for self-defense in the home. See Ch. 5.

Hold (Senate). An informal notice by a senator to party leadership that the senator objects to floor consideration of a bill or nomination. See Ch. 8.

House effect. The systematic tendency of a particular pollster's results to lean in one partisan direction. Aggregators correct for it. See Ch. 17, Appendix F.

House of Representatives. The lower chamber of Congress; 435 voting members, two-year terms, apportioned by population. See Ch. 7.

Humphrey's Executor v. United States (1935). Supreme Court decision upholding congressional power to insulate independent agency commissioners from at-will presidential removal. Increasingly contested in the 21st century. See Ch. 11.

Impeachment. The House's power (Article I, Section 2) to charge a federal officer with "Treason, Bribery, or other high Crimes and Misdemeanors." A simple majority impeaches; conviction requires a two-thirds Senate vote. See Ch. 7, Ch. 9.

Implied powers. Powers not explicitly enumerated in the Constitution but inferred as necessary to carry out enumerated powers. The basis for the Necessary and Proper Clause's expansive reading. See Ch. 4.

Implementation. The bureaucratic execution of laws and policies after they are enacted. Often where general policy intentions meet detailed reality. See Ch. 11, Ch. 33.

Incorporation doctrine. The doctrine, developed primarily through the Fourteenth Amendment, that most Bill of Rights protections apply against state and local governments as well as the federal government. See Ch. 5.

Incumbency advantage. The electoral edge enjoyed by incumbent officeholders due to name recognition, fundraising, constituent service, and (in legislative races) redistricting. See Ch. 22.

Independent agency. A federal agency outside the cabinet departments, often with multimember commissions and statutory protections from at-will presidential removal (e.g., FCC, FTC, FEC). See Ch. 11.

Independent expenditure. A political expenditure made independently of any candidate or party. Subject to fewer restrictions than coordinated spending. See Ch. 34.

Independent redistricting commission. A body of citizens (rather than legislators) that draws district lines. Used in roughly a dozen states. See Ch. 35.

Inherent powers. Powers the executive is said to possess by virtue of being the executive, even without explicit constitutional or statutory grant. Especially debated in foreign and emergency powers. See Ch. 9.

Inspector General (IG). Independent watchdogs within federal agencies who investigate waste, fraud, and abuse. See Ch. 11.

Interest group. An organization that seeks to influence policy without itself running candidates for office. See Ch. 24.

Intermediate scrutiny. The middle tier of equal-protection analysis: the government must show that a classification is substantially related to an important governmental interest. Applied to gender classifications. See Ch. 6.

Iron triangle. The three-way relationship among an interest group, the relevant congressional committee, and the relevant agency, in which all three benefit from cooperation. See Ch. 24.

Issue public. The subset of citizens who pay close attention to a particular issue. See Ch. 17.

Jeffersonian. Pertaining to Thomas Jefferson's vision of a limited national government, agrarian economy, and decentralized power. Contrasts with Hamiltonian. See Ch. 2.

Joint Committee on Taxation (JCT). The nonpartisan congressional committee that produces tax-policy revenue estimates. See Ch. 16, Ch. 27.

Joint fundraising committee (JFC). A committee through which multiple candidates or party committees raise money together, distributing receipts among them. See Ch. 34.

Judicial activism. A pejorative label, used by partisans on both sides, for judges who substitute their policy preferences for the law. The label is contested because what counts as "activism" depends on the underlying interpretive theory. See Ch. 12, Ch. 14.

Judicial restraint. A disposition favoring narrow rulings, deference to elected branches, and respect for precedent. Like its opposite, often used as a partisan label. See Ch. 12.

Judicial review. The power of courts to declare laws and executive actions unconstitutional. Established in Marbury v. Madison (1803). See Ch. 12, Appendix E.

Judicial Watch. A conservative legal-watchdog organization. (Counterpart to liberal Public Citizen and others.) See Ch. 24.

Jurisdiction. A court's authority to hear a case. Federal courts have limited jurisdiction defined by Article III and statute. See Ch. 13.

Jus sanguinis. Citizenship by descent ("right of blood"). See Ch. 31.

Jus soli. Citizenship by place of birth ("right of soil"). U.S. citizenship is largely jus soli under the Fourteenth Amendment. See Ch. 31.

Justiciability. The set of doctrines (standing, ripeness, mootness, political question) determining whether a federal court can hear a case. See Ch. 12.

K Street. Shorthand for the Washington lobbying industry, after the Washington street where many lobbying firms historically had offices. See Ch. 24.

Kingdon's three streams. John Kingdon's policy-process model: problems, policies, and politics flow as separate streams that occasionally converge in a "policy window." See Ch. 33.

Korematsu v. United States (1944). Supreme Court decision upholding the wartime internment of Japanese Americans; widely repudiated and explicitly disavowed in Trump v. Hawaii (2018). See Ch. 6.

Lawrence v. Texas (2003). Supreme Court decision striking down state laws criminalizing same-sex sexual conduct. See Ch. 5.

Leadership PAC. A PAC sponsored by an officeholder or candidate to support other candidates' campaigns. See Ch. 34.

Legitimacy. The widely accepted belief that an institution has the right to make binding decisions. See Ch. 1, Ch. 14.

Lemon test. The (now largely abandoned) three-part test from Lemon v. Kurtzman (1971) for Establishment Clause cases. Replaced by historical and tradition-based analysis in Kennedy v. Bremerton (2022). See Ch. 5.

Likely-voter screen. A pollster's method for filtering survey respondents to those most likely to actually vote. See Ch. 17, Appendix F.

Living constitutionalism. An interpretive approach that treats the Constitution's meaning as evolving with social and technological change. Compare Originalism. See Ch. 14.

Lobbying. Direct communication with public officials in an attempt to influence policy. See Ch. 24.

Logrolling. Vote trading among legislators. See Ch. 8.

Loper Bright Enterprises v. Raimondo (2024). Supreme Court decision overturning Chevron deference. Courts now decide statutory ambiguity for themselves, without giving binding deference to agencies. See Ch. 11.

Magnitude (district magnitude). The number of representatives elected from a single district. The U.S. House uses single-member districts (magnitude = 1); proportional systems use higher magnitudes. See Ch. 39.

Majority leader. The leader of the majority party in each chamber of Congress. The Senate Majority Leader is the most powerful figure in the Senate; the House Majority Leader serves under the Speaker. See Ch. 8.

Majority opinion. The opinion that announces the court's judgment and the reasoning binding on lower courts. See Ch. 14.

Major-questions doctrine. A canon of statutory interpretation, articulated forcefully in West Virginia v. EPA (2022), holding that agencies need clear congressional authorization before deciding questions of "vast economic and political significance." See Ch. 11.

Mandatory spending. Federal spending on programs whose eligibility and benefit formulas are set in statute (Social Security, Medicare, Medicaid, interest on the debt). About two-thirds of the federal budget. See Ch. 16.

Manager's amendment. A package of changes proposed by the bill's manager (typically the chair of the relevant committee) just before floor consideration. See Ch. 8.

Marbury v. Madison (1803). The foundational decision establishing judicial review of federal statutes. See Ch. 12, Appendix E.

Margin of error. The statistical uncertainty band around a poll estimate. Typically reported at the 95% confidence level. See Ch. 17, Appendix F.

Markup. The committee process of revising a bill, line by line, before sending it to the floor. See Ch. 8.

Mass media. Communication channels reaching large audiences (broadcast, print, online). See Ch. 18.

McCarthy era. The period of intense anti-communist investigation in the late 1940s and 1950s, named for Senator Joseph McCarthy. A recurring reference in discussions of civil liberties. See Ch. 5.

McCutcheon v. FEC (2014). Supreme Court decision striking down aggregate federal contribution limits while leaving per-recipient limits intact. See Ch. 34.

Media bias. A contested concept; can mean systematic ideological lean of journalism, structural commercial pressures, or framing effects. See Ch. 18.

Median voter theorem. The proposition that, in a single-dimensional election with two candidates, both candidates will converge toward the policy preferences of the median voter. Predictive power has weakened in an era of polarization. See Ch. 22.

Midterm election. A federal election held in even-numbered years between presidential elections. Turnout is typically lower; the president's party typically loses seats. See Ch. 22.

Miranda v. Arizona (1966). Supreme Court decision requiring police to inform criminal suspects of their rights to silence and counsel. See Ch. 5.

Mootness. A justiciability doctrine: a case is moot when the underlying dispute has been resolved or no longer affects the parties. See Ch. 12.

Motion to proceed. The Senate motion required to begin consideration of most legislation; itself subject to filibuster, which is one reason the filibuster blocks legislation early. See Ch. 8.

Multi-member district. An electoral district that elects more than one representative. See Ch. 39.

National Security Council (NSC). The executive office that coordinates national security policy across agencies. Headed by the National Security Advisor. See Ch. 10, Ch. 32.

Necessary and Proper Clause. Article I, Section 8, Clause 18: gives Congress power to make all laws "necessary and proper" for executing its enumerated powers. The textual basis for implied powers. See Ch. 4.

Negative partisanship. Identification with a political party driven primarily by dislike of the opposing party rather than affinity for one's own. See Ch. 25.

NEPA. The National Environmental Policy Act of 1970, requiring federal agencies to prepare environmental impact statements for major actions. See Ch. 30.

NGP VAN. The dominant Democratic-aligned voter file and campaign software platform. See Ch. 21.

Ninth Amendment. Provides that the enumeration of rights in the Constitution shall not be construed to deny or disparage other rights "retained by the people." See Ch. 5.

Nineteenth Amendment. Ratified 1920; prohibits denial of the vote on the basis of sex. See Ch. 36.

Nonsuspect classification. A classification (e.g., age) that triggers only rational-basis review under equal protection. See Ch. 6.

Norms (vs. rules). Unwritten expectations of behavior that constrain officials beyond legal requirements. Norms are more fragile than rules but often more important for democratic functioning. See Ch. 37.

Notice-and-comment rulemaking. The standard process under the Administrative Procedure Act: agency publishes proposed rule, accepts public comments, issues final rule. See Ch. 11.

Nuclear option. A parliamentary maneuver allowing the Senate to change its rules by a simple majority, used in 2013 to lower the cloture threshold for non-Supreme Court nominations and in 2017 for Supreme Court nominations. See Ch. 8.

Obergefell v. Hodges (2015). Supreme Court decision holding that same-sex couples have a constitutional right to marry. See Ch. 6, Appendix E.

Office of Information and Regulatory Affairs (OIRA). The OMB office that reviews proposed federal regulations. A central node of presidential control over rulemaking. See Ch. 11.

Office of Management and Budget (OMB). The largest unit in the EOP; prepares the president's budget and oversees executive branch management. See Ch. 10, Ch. 16.

Omnibus bill. A large bill combining many separate measures, often passed under time pressure. See Ch. 8, Ch. 16.

OpenSecrets. A nonprofit research organization (formerly the Center for Responsive Politics) that compiles and publishes federal campaign finance and lobbying data. See Ch. 24, Ch. 34.

Open primary. A primary in which any registered voter may participate regardless of party registration. See Ch. 19.

Original jurisdiction. A court's authority to hear a case as the first court rather than on appeal. The Supreme Court has narrow original jurisdiction (e.g., cases between states). See Ch. 12.

Originalism. A family of constitutional interpretive theories that gives priority to the original public meaning of constitutional text. Within originalism there is disagreement (e.g., between original-intent and original-public-meaning variants). Compare Living constitutionalism. See Ch. 14.

Override. Congress's power to enact a law over the president's veto by a two-thirds vote in both chambers. See Ch. 9.

Oversight. The congressional function of monitoring executive branch implementation through hearings, investigations, and budgetary control. See Ch. 7.

PAC. See Political action committee.

Packing. A gerrymandering technique that concentrates a party's voters into a few districts so they win those districts overwhelmingly while losing more districts elsewhere. See Ch. 35.

Parliamentary system. A system in which the executive (prime minister) is chosen by and accountable to the legislature, and can be removed by a vote of no confidence. See Ch. 39.

Partisan realignment. A durable shift in the coalitions supporting the major parties. See Ch. 19.

Partisan sorting. The process by which liberals have moved into the Democratic Party and conservatives into the Republican Party, leaving the parties more internally homogeneous. Distinct from polarization, though related. See Ch. 25.

Party platform. The document adopted by a party's national convention stating its policy positions. Often more aspirational than binding. See Ch. 19.

Per curiam. A judicial opinion issued in the name of the court rather than a particular judge. See Ch. 14.

Perception gap. The gap between people's perceptions of the other party's views and that party's actual views; documented to be substantial. See Ch. 25.

Pew Research Center. A nonpartisan public-opinion research organization widely cited for survey data. See Ch. 17.

Plessy v. Ferguson (1896). Supreme Court decision upholding "separate but equal" racial segregation; overturned by Brown (1954). See Ch. 6.

Plurality opinion. An opinion supported by more justices than any other, but not a majority. See Ch. 14.

Pocket veto. The president's power to veto a bill by neither signing nor returning it within ten days of receipt while Congress is adjourned. See Ch. 9.

Polarization (ideological vs. affective). Ideological polarization is divergence in policy preferences; affective polarization is emotional dislike of the opposing side. See Ch. 25.

Policy feedback. The phenomenon by which a policy, once enacted, reshapes the political landscape that produced it (e.g., Social Security creating a constituency that defends it). See Ch. 33.

Policy network. The cluster of legislators, agency officials, interest groups, and experts active in a particular policy area. See Ch. 33.

Policy window. A temporary opening — created by problem recognition, available solutions, and political conditions — when policy change becomes possible. See Ch. 33.

Political action committee (PAC). A committee that pools contributions from members and donates to candidates and other committees. Subject to FECA limits. See Ch. 24, Ch. 34.

Political party. An organization that recruits candidates, contests elections under a common label, and seeks to govern. See Ch. 19.

Political question doctrine. A justiciability doctrine: courts decline to resolve disputes committed by the Constitution to the political branches. Rucho v. Common Cause (2019) declared partisan gerrymandering claims nonjusticiable in federal court. See Ch. 12, Ch. 35.

Political socialization. The lifelong process by which individuals develop political identities and beliefs. See Ch. 17.

Popular vote. The aggregate vote totals; the U.S. president is elected by the Electoral College, not the national popular vote. See Ch. 20.

Pork-barrel spending. Spending targeted to a specific district or state for parochial benefit. See Ch. 16.

Preemption. See Federal preemption. See Ch. 4.

Presidential immunity. The doctrine, expanded by Trump v. United States (2024), giving the president broad immunity from criminal prosecution for "official acts." See Ch. 9.

Presidential proclamation. A formal presidential statement, typically symbolic but sometimes carrying legal effect (e.g., proclamations under statutory delegations). See Ch. 9.

Presidential system. A system in which the executive is separately elected from the legislature and serves a fixed term. The U.S. is the prototypical case. See Ch. 39.

President pro tempore. The senator (traditionally the longest-serving member of the majority party) who presides in the vice president's absence; mostly ceremonial. See Ch. 8.

Primary election. An election to choose a party's nominee for the general election. See Ch. 19.

Prior restraint. A government order forbidding speech before it is uttered. Strongly disfavored under the First Amendment. See Ch. 5.

Privileges and Immunities Clause. Article IV, Section 2: each state must extend to citizens of other states the privileges and immunities it extends to its own. See Ch. 4.

Probable cause. The Fourth Amendment standard for searches and arrests: a reasonable belief, based on facts, that a crime has been committed. See Ch. 5.

Procedural due process. The requirement that government provide fair procedures (notice, hearing) before depriving someone of life, liberty, or property. See Ch. 5.

Progressive Era. The period roughly 1890–1920 of reform aimed at curbing corporate power, expanding democracy (direct election of senators, women's suffrage), and professionalizing government. See Ch. 36.

Proportional representation (PR). An electoral system in which seats are allocated to parties in proportion to their vote share. See Ch. 39.

Provisional ballot. A ballot cast when a voter's eligibility is in question; counted if eligibility is later confirmed. See Ch. 36.

Public comment. The phase of notice-and-comment rulemaking when the public can submit comments on a proposed rule. See Ch. 11.

Public financing. Government funding of campaigns, often paired with spending limits. The federal presidential public-financing system has effectively collapsed; some states and cities run public-financing programs (e.g., New York City's matching system). See Ch. 34.

Public-forum doctrine. The First Amendment framework distinguishing traditional public forums (streets, parks), designated public forums, and nonpublic forums, each with different rules for speech regulation. See Ch. 5.

Public opinion. The aggregate views of the public on political issues, typically measured by surveys. See Ch. 17.

Purposivism. A statutory and constitutional interpretive approach emphasizing the purpose or goal of the text. Compare Textualism. See Ch. 14.

Racial gerrymandering. Drawing district lines based predominantly on race; subject to strict scrutiny under the Equal Protection Clause. See Ch. 35.

Ranked-choice voting (RCV). An electoral system in which voters rank candidates; if no candidate has a majority, the lowest-ranked candidate is eliminated and votes are redistributed until one candidate has a majority. Used in Maine and Alaska for federal elections, and in many U.S. cities. See Ch. 38.

Rational basis. The most lenient tier of equal-protection analysis: government need only show that a classification is rationally related to a legitimate purpose. See Ch. 6.

Reconciliation. A budget procedure allowing certain legislation to pass the Senate with a simple majority and limited debate. Subject to the Byrd Rule. See Ch. 8, Ch. 16.

Redistricting. The drawing of legislative district lines, conducted every ten years after the census. See Ch. 35.

Registered voter. A person who has completed voter registration and is on the rolls. Distinct from eligible voter and likely voter. See Ch. 22.

Registration cliff. The drop-off in registration rates among groups with weaker civic resources or facing administrative obstacles. See Ch. 36.

Regulation. A binding rule issued by a federal agency under statutory authority. See Ch. 11.

Regulatory review. OIRA's review of major proposed regulations for cost-benefit and consistency with administration policy. See Ch. 11.

Religious Freedom Restoration Act (RFRA). 1993 federal statute restoring strict scrutiny for federal laws burdening religious exercise; applies to federal but not state law (under City of Boerne, 1997). See Ch. 5.

Removal. The Senate's power to remove an impeached officer by two-thirds vote following a Senate trial. Different from the constitutional removal power of the president over executive officers. See Ch. 7, Ch. 9.

Republican form of government. Article IV, Section 4: the United States guarantees each state a republican form of government. Generally treated as nonjusticiable. See Ch. 4.

Reserved powers. Powers reserved to the states (or the people) under the Tenth Amendment. See Ch. 4.

Revolving door. The movement of personnel between government positions and the private sector (lobbying, consulting, regulated industry). Subject to varying ethics rules. See Ch. 24.

Right of judicial review. See Judicial review. See Ch. 12.

Ripeness. A justiciability doctrine: a case is ripe when the dispute has matured enough to warrant judicial resolution. See Ch. 12.

Roberts Court. The Supreme Court under Chief Justice John Roberts (2005–present); has shifted the Court's center significantly to the right since 2018. See Ch. 14.

Roe v. Wade (1973). The Supreme Court decision recognizing a constitutional right to abortion under substantive due process. Overturned by Dobbs (2022). See Ch. 5.

Rules Committee. The House committee that sets the terms of floor debate (time limits, allowable amendments) for major bills. The Speaker's chief tool of floor control. See Ch. 8.

Rulemaking. The process by which agencies issue regulations. See Ch. 11.

Schedule F. A category of federal employees, created by executive order in 2020 and rescinded in 2021, designed to remove civil-service protections from policy-influencing positions. Reinstated and contested in subsequent administrations. See Ch. 11.

Section 230. Section 230 of the Communications Decency Act of 1996, which generally immunizes online platforms from liability for user-generated content. Politically contested. See Ch. 18.

Self-incrimination. The Fifth Amendment protection against being compelled in a criminal case to be a witness against oneself. See Ch. 5.

Semi-presidential system. A system combining a directly elected president with a prime minister accountable to the legislature (e.g., France, Russia, Taiwan). See Ch. 39.

Senate. The upper chamber of Congress; 100 members (two per state), six-year terms. See Ch. 7.

Senior Executive Service (SES). The corps of senior career and political-appointee federal managers. See Ch. 11.

Separation of powers. The constitutional division of legislative, executive, and judicial authority among three branches. Distinct from but combined with checks and balances. See Ch. 3.

Sequester. Across-the-board automatic spending cuts triggered by statutory rules. The 2013 sequester remains the salient example. See Ch. 16.

SFFA v. Harvard (2023). Supreme Court decision (Students for Fair Admissions v. Harvard) holding that race-conscious admissions programs at Harvard and UNC violated the Equal Protection Clause and Title VI. See Ch. 6.

Signature match. A method for verifying mail ballots by comparing the signature on the envelope to the signature on file. Politically contested. See Ch. 36.

Signing statement. A presidential statement issued upon signing legislation, sometimes interpreting or stating intentions about enforcement. See Ch. 9.

Single-member district. An electoral district that elects one representative; the U.S. House norm. See Ch. 19.

Sixth Amendment. Guarantees criminal trial rights, including a speedy public trial, an impartial jury, the right to confront witnesses, and the right to counsel. See Ch. 5.

Smith. Employment Division v. Smith (1990), the Supreme Court decision holding that a neutral, generally applicable law does not violate the Free Exercise Clause merely because it incidentally burdens religious practice. See Ch. 5.

Social movement. A sustained, organized effort by people outside government to change policy or society. See Ch. 26.

Soft money. Funds raised outside FECA limits, traditionally for "party-building" activities; severely restricted by BCRA in 2002. See Ch. 34.

Solicitor General. The Department of Justice official who represents the United States in the Supreme Court. See Ch. 14.

Speaker of the House. The presiding officer and majority-party leader of the House of Representatives. Constitutionally second in line to the presidency. See Ch. 8.

SpeechNow.org v. FEC (2010). D.C. Circuit decision (relying on Citizens United) striking down contribution limits on PACs that make only independent expenditures. The legal birth of the super PAC. See Ch. 34.

Standing. A justiciability doctrine: a plaintiff must show concrete injury, causation, and redressability to bring a federal lawsuit. See Ch. 12.

Stare decisis. The principle that courts should generally follow their own prior decisions. See Ch. 14.

State of the Union. The annual address required by Article II, Section 3, in which the president reports on the "State of the Union" and recommends measures to Congress. See Ch. 9.

Statutory interpretation. The judicial process of determining the meaning of statutes. See Ch. 13.

Strict scrutiny. The most stringent tier of equal-protection (and First Amendment) analysis: the government must show that a classification is narrowly tailored to a compelling government interest. Applied to racial classifications and most content-based speech regulations. See Ch. 6.

Substantive due process. The doctrine that the Due Process Clause protects certain unenumerated fundamental rights from government infringement. The doctrinal home of Roe (now overruled), Lawrence, and Obergefell. See Ch. 5.

Sunset provision. A statutory clause causing a law or program to expire on a specified date unless renewed. See Ch. 33.

Sunshine laws. Statutes requiring open meetings and public records. See Ch. 11.

Super PAC. An independent-expenditure-only committee, permitted to raise and spend unlimited funds (from individuals, corporations, and unions) so long as it does not coordinate with a candidate. Created by Citizens United and SpeechNow. See Ch. 34.

Superdelegate. An unpledged delegate to the Democratic National Convention (typically a party official or elected official). After 2018 reforms, superdelegates do not vote on the first ballot. See Ch. 19.

Supremacy Clause. Article VI, Clause 2: the Constitution and federal laws made under it are "the supreme Law of the Land." The textual basis for federal preemption. See Ch. 4.

Supreme Court. The highest federal court; nine justices (since 1869) with jurisdiction defined by Article III and statute. See Ch. 14.

Surveillance. Government monitoring of communications and activity; subject to Fourth Amendment and statutory limits (FISA, ECPA). See Ch. 5.

Suspect classification. A classification (race, national origin, alienage) that triggers strict scrutiny under equal protection. See Ch. 6.

Takings Clause. The Fifth Amendment provision: "nor shall private property be taken for public use, without just compensation." See Ch. 5.

Tax expenditure. A revenue loss attributable to a provision of the tax code (e.g., the mortgage-interest deduction). Functionally a form of spending through the tax system. See Ch. 16, Ch. 27.

Tea Party. The conservative populist movement that emerged in 2009 in opposition to the Affordable Care Act and federal stimulus spending. See Ch. 26.

Tenth Amendment. Reserves to the states (or the people) powers not delegated to the United States. See Ch. 4.

Textualism. A statutory and constitutional interpretive approach emphasizing the ordinary meaning of the text. Closely associated with originalism but distinct. See Ch. 14.

The Federalist. See Federalist Papers. See Ch. 2.

Third party. A political party other than the two major parties. Structural features (FPTP, sore-loser laws, ballot access rules) make U.S. third parties durably weak. See Ch. 19.

Three-Fifths Compromise. Article I, Section 2's original provision counting an enslaved person as three-fifths of a free person for purposes of representation and taxation. Repudiated by the Reconstruction Amendments. See Ch. 2, Ch. 3.

Top-two primary. A primary system in which all candidates appear on a single ballot regardless of party, and the top two finishers advance to the general election (used in California and Washington). See Ch. 19.

Treaty power. The president's Article II power to make treaties "by and with the Advice and Consent of the Senate," which must concur by a two-thirds vote. See Ch. 32.

True threat. A statement that a reasonable person would understand as a serious expression of intent to commit unlawful violence; not protected by the First Amendment. See Ch. 5.

Trump v. United States (2024). Supreme Court decision holding that former presidents enjoy absolute immunity from criminal prosecution for "core" constitutional functions and presumptive immunity for other "official acts." See Ch. 9, Ch. 37.

Turnout. The fraction of eligible (or registered) voters who actually vote. See Ch. 22.

Twelfth Amendment. Restructured the Electoral College after the 1800 election deadlock, providing for separate electoral votes for president and vice president. See Ch. 20.

Twenty-fifth Amendment. Ratified 1967; provides for presidential succession, vice-presidential vacancy, and presidential disability. See Ch. 9, Ch. 10.

Twenty-sixth Amendment. Ratified 1971; lowered the voting age to 18. See Ch. 36.

Two-party system. A party system in which two parties dominate elections and government. Predicted by Duverger's Law for FPTP single-member-district systems. See Ch. 19.

Unitary executive theory. A constitutional theory holding that all executive power must be exercisable by the president, implying expansive presidential removal authority and casting doubt on independent agencies. See Ch. 9, Ch. 11.

V-Dem index. Varieties of Democracy index, a multidimensional academic measure of democratic quality across countries. See Ch. 39.

Veto. The president's Article I power to return a bill to Congress; overridden only by a two-thirds vote of each chamber. See Ch. 9.

VoteCast. The Associated Press / NORC survey of voters used to characterize the electorate; an alternative to traditional exit polls. See Ch. 17.

Voter file. A database of registered voters, augmented with consumer and modeling data, used by campaigns. See Ch. 21.

Voter ID. Requirement that voters present identification at the polls; specifics (photo, non-photo, exceptions) vary by state and are politically contested. See Ch. 36.

Voter purge. Removal of registered voters from the rolls, ostensibly for ineligibility (death, move, etc.). Politically contested when methods are unreliable. See Ch. 36.

Voter suppression / voter integrity. Two contested framings of restrictive voting rules. The terms reflect different normative starting points; the underlying empirical questions (whether a given rule affects turnout, or affects fraud) are amenable to evidence. See Ch. 36.

Voting Rights Act (VRA, 1965). The landmark statute prohibiting racial discrimination in voting; significantly weakened by Shelby County v. Holder (2013) (preclearance) and Brnovich v. DNC (2021) (Section 2). See Ch. 36.

War Powers Resolution (1973). The statute requiring the president to notify Congress within 48 hours of committing armed forces and to terminate use within 60 days absent congressional authorization. Of contested constitutional status and inconsistently enforced. See Ch. 32.

Wave election. An election in which one party makes large gains. See Ch. 22.

Westminster model. The British parliamentary system, characterized by a unitary state, plurality elections, fused executive-legislature, and parliamentary sovereignty. See Ch. 39.

Whip. The legislator (in each party in each chamber) responsible for counting and corralling votes. See Ch. 8.

WinRed. The Republican-aligned online fundraising platform; counterpart to ActBlue. See Ch. 21, Ch. 34.

Writ of habeas corpus. A judicial order requiring justification for a person's detention. Article I forbids suspension except in cases of rebellion or invasion. See Ch. 5.

Cross-references throughout this glossary point to chapters where the term receives its primary discussion. Many terms recur across multiple chapters; readers seeking further treatment should also consult the index.