Do Primaries Cause Polarization?

For years, political scholars and pundits have claimed that primary elections are exacerbating polarization and with the 2022 midterm elections approaching this year has been no different. With many extremist candidates on both sides of the aisle, it certainly feels like this claim should be true, but does the political science back that up? To find an answer we turn to Harvard political scientist James Snyder and his 2010 paper “Primary Elections and Partisan Polarization in the U.S. Congress”. The findings are surprising and may have some key insights for how we should think about primary elections in the U.S.