Jacob R. Brown

Jacob R. Brown

PhD Candidate in Government

Harvard University

Jacob R. Brown

I am a PhD Candidate in Government at Harvard University studying political behavior in American politics. In particular, I am interested in how political geography and group identity structure political behavior. My dissertation investigates the behavioral consequences of geographic partisan polarization, with specific focus on how this polarization is self-reinforcing: how living in increasingly homogeneous partisan environments influences voters’ political affiliations. To this end, I develop data on the partisan residential exposure of every voter in the United States over the past decade, leveraging precise information on each voter's residential location, partisan affiliation, and political behavior. With these data I present new evidence on the extent and causes of partisan sorting in the United States and test new theories of how where Democrats and Republicans live in relation to one another influences political behavior.

Works in Progress

  • Is Geographic Polarization Self-reinforcing? Partisan Conversion Amid Rising Partisan Segregation
  • The Causes and Extents of Increasing Partisan Segregation. (with Enrico Cantoni, Ryan Enos, Vincent Pons, and Emilie Sartre).
  • Long-term Effects of Racial Diversity: Evidence from Linked Census and Survey Data. (with Ryan Enos, James Feigenbaum, Shom Mazumder, and Dominic Valentino).
  • The Homeless Voter: How Shelters Make Citizens. (with Michael Zoorob).
  • Priming versus Post-treatment Biases in Experimental Design. (with Matthew Blackwell, Sophie Hill, Kosuke Imai, and Teppei Yamamoto).
  • Capturing Sociopolitical Attitudes without Surveys and Measuring Political Polarization. (with Ryan Enos and Aaron Kaufman).
  • Predicting Subjective Perceptions of Neighborhoods. (with Kosuke Imai and Cory McCartan).
  • Using Public Video Feeds to Understand Social Distancing. (with Soubhik Barari, Bryce Dietrich, Ryan Enos, and Melissa Sands).