Faculty member, and Director of Undergraduate Studies, Dan Butler, published an article discussing the work he and his co-authors did for their 2024 Primary Election Dataset. He was also interviewed by Verasight, the firm the team hired to conduct the survey for the study, about the work on the project. 

The Primary Election Study (PES), as it is called, is a survey dataset designed to "facilitate the study of voter behavior, attitudes, and decision-making in U.S. primary elections." The PES was fielded during the 2024 U.S. Senate primary elections in California, Michigan, and Nevada and includes both representative samples of the adult population and large oversamples of likely primary voters. It collected data from 8124 respondents through a pre-election survey administered in the weeks leading up to each state’s primary contest. His co-authors are Sarah E. Anderson (UC-Santa Barbara), Peter K. Enns (Cornell), Laurel Harbridge-Yong (Northwestern), and Jacob E. Rothschild (Verasight).

Watch Professor Butler's interview below about the information, and read the full explanation paper published in the journal, Data in Brief.

The project was funded by grants from Unite America, The WashU SPEED Initiative, and the Weidenbaum Center at WashU.