Abortion Attitudes Are Coherent, Enduring, and Predict Voter Shifts

Why This Question Matters

Public attitudes about abortion fuel debates over courts, elections, and policy—but are those attitudes stable, structured beliefs or fleeting reactions? In AJPS, Natalie Hernandez, Mackenzie Lockhart, Alan Geber, and Gregory Huber test whether Americans' abortion policy preferences are internally coherent, durable over time, and consequential for political behavior. Establishing these qualities matters for interpreting public opinion on abortion and for understanding whether abortion can independently shape electoral dynamics.

How the Authors Study It

The authors analyze a large-scale panel dataset (n = 130,000) and apply three diagnostic tests to assess the nature of abortion attitudes. The diagnostics are designed to evaluate: (1) logical coherence within and across respondents' reasons for supporting or opposing abortion policies; (2) temporal stability, comparing attitude persistence to that of standard personality trait measures; and (3) predictive validity, using pre-Dobbs measurements of abortion preferences to forecast changes in intended voting behavior between 2020 and 2024. The timing of measurement—before the U.S. Supreme Court overturned Roe v. Wade—helps isolate the predictive power of preexisting preferences.

Key Findings

• Abortion preferences display clear logical coherence: responses about reasons for or against abortion align consistently within individuals and across related items.
• These preferences are highly stable over time—empirically more stable than commonly used personality-trait measures—indicating deeply held attitudes rather than ephemeral opinions.
• Measured before the Court's decision, abortion policy preferences predict shifts in intended vote choice between 2020 and 2024, demonstrating consequential effects on political behavior.

The authors show that this pattern makes several alternative explanations unlikely, including that respondents are expressing non-opinions, that attitudes merely follow earlier vote choice, or that elite cues alone account for observed relationships.

What This Means for Politics and Research

The results present abortion attitudes as a coherent, durable, and independent force in American politics. That combination explains why abortion can shape campaign dynamics and voter mobilization beyond momentary events or elite messaging. For scholars, the study provides a clear empirical framework—coherence, stability, and predictive validity—for judging whether other charged issues reflect similarly grounded public opinion.