Chapter 29 Further Reading: Voter Targeting and Microtargeting

Foundational Works on Targeting

Hersh, Eitan D. Hacking the Electorate: How Campaigns Perceive Voters (Cambridge University Press, 2015) The most rigorous academic treatment of how campaign targeting works and fails. Hersh's central argument — that campaigns "perceive" voters through the distorted lens of available data — is essential for understanding the gap between what targeting claims to do and what it actually accomplishes. Particularly valuable on the reliability problems in voter file-based inference and how data availability varies by state law.

Hillygus, D. Sunshine, and Todd G. Shields. The Persuadable Voter: Wedge Issues in Presidential Campaigns (Princeton University Press, 2008) The foundational academic study of persuadable voters as a distinct category — who they are, what makes them persuadable, and how campaigns target them with wedge issues. Hillygus and Shields provide the political science underpinning for targeting strategies built around issue cross-pressure.

Nickerson, David W., and Todd Rogers. "Political Campaigns and Big Data." Journal of Economic Perspectives 28, no. 2 (2014): 51–74. An accessible review of the research on targeting effectiveness, written by scholars who have conducted foundational field experiments on voter contact. The article connects the voter file literature to the experimental evidence on what targeted contact achieves. The most useful single-article overview of the field.

On Digital Targeting and Platforms

Kreiss, Daniel, and Shannon C. McGregor. "Technology Firms Shape Political Communication: The Work of Microsoft, Facebook, Twitter, and Google with Political Parties and Candidates in the 2016 U.S. Presidential Election." Political Communication 35, no. 2 (2018): 155–177. Examines how technology platforms actively embed themselves in campaign targeting operations through account management teams, custom product development, and data partnerships. Challenges the notion that platforms are neutral infrastructure and documents how they shape what targeting strategies are available and attractive to campaigns.

Kim, Young Mie, et al. "The Stealth Media? Groups and Targets behind Divisive Issue Campaigns on Facebook." Political Communication 35, no. 4 (2018): 515–541. An empirical study of political advertising on Facebook using a custom-built ad monitoring system. Documents the range of political actors using Facebook targeting, the targeting strategies visible in their ad choices, and the opacity of the system. Essential reading on the transparency problem in digital political advertising.

Ridout, Travis N., et al. "Evaluating the Persuasive Effects of Online Political Advertising." Journal of Information Technology & Politics 12, no. 2 (2015): 160–174. A rigorous experimental study of online political ad persuasion effects that finds smaller effects than industry claims would predict. A useful counterweight to platform-published effectiveness studies.

On Microtargeting Ethics and Accountability

Dommett, Katharine. "Data-Driven Political Campaigns in Practice: Understanding and Regulating Diverse Data-Driven Campaigns." Internet Policy Review 8, no. 4 (2019). A comparative analysis of how data-driven targeting is practiced across different democratic contexts, with particular attention to regulatory frameworks. Valuable for understanding the range of policy approaches beyond the US case.

Zuiderveen Borgesius, Frederik, et al. "Online Political Microtargeting: Promises and Threats for Democracy." Utrecht Law Review 14, no. 1 (2018): 82–96. A legal and normative analysis of microtargeting's implications for democratic theory. Covers the key ethical concerns — manipulation, accountability gaps, discrimination — with attention to the regulatory responses available in European versus American legal contexts.

Bennett, Colin J., and Smith Finn, David. "Regulating Political Microtargeting in Democratic Elections." Internet Policy Review 7, no. 4 (2018). Examines the specific regulatory challenges of political microtargeting and proposes a framework for policy responses. Useful for understanding what disclosure and restriction regimes are feasible and what their likely effects would be.

On Cambridge Analytica

Cadwalladr, Carole, and Emma Graham-Harrison. "Revealed: 50 million Facebook Profiles Harvested for Cambridge Analytica in Major Data Breach." The Guardian, March 17, 2018. The original investigative report that broke the Cambridge Analytica story. Essential reading for understanding how the episode unfolded and what the journalistic investigation found.

Wylie, Christopher. Mindfck: Cambridge Analytica and the Plot to Break America* (Random House, 2019) The insider account by Cambridge Analytica's former research director, Christopher Wylie. Provides unique access to the internal operations and claims of the company. Should be read alongside skeptical academic analyses, as Wylie has interests in emphasizing the company's sophistication and impact.

Matz, S.C., et al. "Psychological Targeting as an Effective Approach to Digital Mass Persuasion." PNAS 114, no. 48 (2017): 12714–12719. The academic study that provided the strongest experimental evidence for psychographic targeting effects — the study that Cambridge Analytica's claims were loosely grounded in. The effect sizes (3–11% improvement in engagement over mismatched messaging) are much smaller than Cambridge Analytica's commercial claims implied.

Guess, Andrew, et al. "How Much Does Psychographic Microtargeting Actually Work? Evidence from the 2020 US Presidential Election." Working paper, 2021. A large-scale pre-registered experiment examining psychographic targeting effects in a real electoral context, finding very small effects. Provides the most rigorous post-Cambridge Analytica evidence on whether psychographic targeting works.

On Voter Suppression and Dark Patterns

Spencer, Gary. "Disinformation and Voter Suppression." NYU Journal of Legislation and Public Policy 23 (2020). A legal analysis of how digital microtargeting has been used for voter suppression, including both documentary evidence from past elections and analysis of the regulatory tools available to address it.

Benkler, Yochai, Robert Faris, and Hal Roberts. Network Propaganda: Manipulation, Disinformation, and Radicalization in American Politics (Oxford University Press, 2018) A comprehensive empirical study of information flows in the 2016 election cycle. While broader than targeting specifically, it provides essential context for understanding how targeted messaging fits into the larger information environment that campaigns try to shape.

Data and Tools

Facebook Ad Library (facebook.com/ads/library) — Archive of all current and recent political advertisements on Facebook and Instagram, including partial targeting and spending information. An essential tool for primary research on digital political advertising.

Who Targets Me (whotargets.me) — A browser plugin that collects data from users who consent to share what political ads they see, providing crowd-sourced visibility into targeting practices. Useful for illustrating the gap between what campaigns can see about their own targeting and what external observers can reconstruct.

Analyst Institute (analystinstitute.org) — Produces rigorous evaluations of voter contact and targeting techniques, including meta-analyses of field experiments. The most valuable practitioner-oriented research resource on targeting effectiveness.