Now through Nov. 8, 2022:
Mark Kelly (AZ) is another at-risk new Senator. In his 2020 special election, he flipped the seat previously held by John McCain, winning by only 2.4%. He will run for re-election in 2022. As a scientist and former astronaut, Kelly is endorsed by 3.14 Action Fund, a non-profit PAC that seeks to get scientists elected in the US.