The primary election study 2024 dataset on U.S. Senate primary elections
Sarah E Anderson1, Daniel M Butler2, Peter K Enns3
1University of California Santa Barbara, Bren School of Environmental Science & Management, 4510 Bren Hall, University of California, Santa Barbara, CA 93106-5131, USA.
Data in Brief
|April 30, 2026
Summary
The Primary Election Study (PES) offers a new dataset for analyzing voter behavior in U.S. Senate primary elections. It captures detailed attitudes and validated turnout, improving research on electoral dynamics.
Area of Science:
- Political Science
- American Politics
- Survey Methodology
Background:
- Existing election surveys often lack contemporaneous data collection during primary elections.
- There is a need for datasets with sufficient statistical power to analyze primary electorates.
- Understanding voter behavior in U.S. primary elections is crucial for democratic accountability.
Purpose of the Study:
- To introduce and describe the Primary Election Study (PES) dataset.
- To provide a comprehensive resource for studying voter behavior, attitudes, and decision-making in U.S. primary elections.
- To address limitations in existing election survey data.
Main Methods:
- The Primary Election Study (PES) surveyed 8124 respondents in California, Michigan, and Nevada during the 2024 U.S. Senate primary elections.
- Data collection included representative samples and oversamples of likely primary voters, with validated turnout measures.
- The survey captured detailed information on candidate evaluations, issue priorities, partisan attitudes, and political engagement.
Main Results:
- The PES dataset provides validated turnout data, distinguishing reported intentions from actual participation.
- It offers robust measures for analyzing statewide populations, likely primary electorates, and combined samples using provided survey weights.
- The data enables contemporaneous analysis of voter preferences aligned with primary election timing.
Conclusions:
- The PES dataset is a valuable resource for research on electoral behavior, political polarization, representation, and democratic accountability.
- It facilitates methodological replication and serves as a teaching tool for political science.
- The study enhances the capacity for in-depth analysis of primary election dynamics and voter decision-making.
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