Alaska
Alaska Senator Lisa Murkowski voted for Trump’s impeachment over the January 6th capitol riot, now Trump is endorsing her challenger and this is having quite the effect.
Murkowski’s challenger, Kelly Tshibaka, received an endorsement from Trump and is now ahead of Murkowski in the latest polls. Unfortunately, Alaska does not have a party primary system, and the system they do use is highly beneficial to Murkowski so things are not set in stone.