This article examines how closed, single-party primary elections are increasing polarization in Congress by limiting voter choice and incentivizing extreme party loyalty. Key facts: Over 90% of U.S.
House seats are now considered safe for one party, meaning primaries determine most members. Lawmakers like Rep.
Brian Fitzpatrick and Sen. Bill Cassidy have been ousted or threatened by primary challenges after crossing party lines.
In Louisiana, a switch to semi-closed primaries led to Cassidy's defeat, while Alaska's open primary system helped Sen. Lisa Murkowski win reelection as a write-in candidate.
Reformers advocate for nonpartisan primaries to reduce polarization and increase voter participation. The article concludes that primary systems are a key driver of congressional dysfunction and calls for broader electoral reforms.