In addition to my research on policy change and discourse in Congress, I study the intersection of race and public policy in the US by focusing on racially disparate policing and its causes.

Please do not hesitate to contact me if you would like a copy of any working paper. 



To what extent do African Americans and white Americans experience the same America? How do policy choices shape those experiences, and what influences those choices? By focusing on racial disparities in traffic stop outcomes, our team seeks to study these questions.

Suspect Citizens:
What 20 Million Traffic Stops Tell Us About Policing and Race

Frank Baumgartner, Derek Epp, & Kelsey Shoub

Using information on over 20 million traffic stops, we explore: 1) the extent of racial disparities in traffic stop outcomes in North Carolina; 2) their political sources; & 3) potential policy responses. For additional information, click here. Here are links to some of the press focused on the book:

Additionally, it was reviewed in the September 2019 issue of Perspectives on Politics


Peer Reviewed Article 

Other Article

Working Papers

  • Kelsey Shoub, Derek A. Epp, Frank Baumgartner, Leah Christiani, and Kevin Roach."Race, Place, and Context: The Persistence of Race Effects in Traffic Stops Outcomes in the Face of Situational, Demographic, and Political Controls." Conditional Acceptance at the Journal of Race, Ethnicity, and Politics. [Manuscript] [Online Appendix] [Data] [Code]

  • Kelsey Shoub, Leah Christiani, Frank Baumgartner, Derek A. Epp, and Kevin Roach. "Fines, Fees, and Disparities: The Link Between Municipal Reliance on Fines and Racial Disparities in Policing."

  • Leah Christiani, Kelsey Shoub, Frank Baumgartner, Derek Epp, and Kevin Roach. "Descriptive Representation and the Reduction of Racial Disparities in Traffic Stop Outcomes." 

  • Kevin Roach, Frank Baumgartner, Leah Christiani, Derek Epp, and Kelsey Shoub. "At the Intersection: The Amplifying Effects of Gender and Stop Purpose on Race in Determining Traffic Stop Outcomes."



Columbia, SC

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