Are Primary Elections Responsible for Polarization in Congress?

Are Primary Elections Responsible for Polarization in Congress?

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.

More episodes of Not Another Politics Podcast

Explore listener stats, chart rankings, contacts and more on the Not Another Politics Podcast podcast page.