Are Primary Elections Responsible for Polarization in Congress?

Are Primary Elections Responsible for Polarization in Congress?

From Not Another Politics Podcast by University of Chicago Podcast Network

January 22, 2026 · 38 min · Episode 153

About this episode

The episode discusses the impact of primary elections on congressional polarization with insights from a forthcoming paper.

Do members of Congress vote differently when they are worried about winning their party’s primary election? On today's episode, Ethan and Wioletta interview Anthony about his forthcoming paper, “Do Primary Elections Exacerbate Congressional Polarization?,” which is forthcoming from the Journal of Politics. Using detailed voting data and the natural variation in primary election timing across states, Anthony and his co-author, Shu Fu, show that primaries play a surprisingly small role in pushing lawmakers to the ideological extremes—accounting for only about 1% of congressional polarization.

People in this episode

Hosts: Ethan, Wioletta

Guest: Anthony

Topics covered

  • primary elections
  • congressional polarization
  • political behavior
  • voting data
  • ideological extremes

Keywords

  • primary elections
  • Congress
  • polarization
  • voting data
  • ideological extremes
  • politics
  • Ethan
  • Wioletta
  • Anthony

Mentioned in this episode

Organizations: Journal of Politics

Books & works: Do Primary Elections Exacerbate Congressional Polarization?

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