Alaska special election will gauge Murkowski's re-election chances

The election to replace the late Rep. Don Young will put a new person in Alaska's lone House seat for the first time in nearly half a century. It'll also test a pioneering new voting system — and the re-election prospects of Sen. Lisa Murkowski.

Why it matters: Murkowski is the only Senate Republican up for re-election this cycle who voted to convict former President Trump. She also animated the 50-50 Senate by voting for many of President Biden's nominees and working with Democrats on infrastructure and election reform.

How it works: Candidates from any party will run in a nonpartisan primary, and the top four vote-getters will advance to the general election.