Feinstein has filed paperwork to run. However, according to a staffer, this was due to election law technicalities, and was not indicative of her intentions in 2024
Will Dianne Feinstein (D-CA; Age 91) retire?
Clear selection
Will Chris Murphy (D-CT; Age 51) retire?
Clear selection
Delaware
In the 2018 primary season, Carper hinted at retiring, saying "This may be the last time."
Will Tom Carper (D-DE; Age 77) retire?
Clear selection
Will Rick Scott (R-FL; Age 71) retire?
Clear selection
Will Mazie Hirono (D-HI; Age 77) retire?
Clear selection
Will Mike Braun (R-IN; Age 70) retire?
Clear selection
Maine
In October 2018, King hinted at retiring.
Will Angus King (I-ME; Age 80) retire?
Clear selection
Will Ben Cardin (D-MD; Age 81) retire?
Clear selection
Massachuestts (No poll)
Elizabeth Warren announced her plan to run for re-election on May 8, 2021.
Will Debbie Stabenow (D-MI; Age 74) retire?
Clear selection
Will Amy Klobuchar (D-MN; Age 64) retire?
Clear selection
Will Roger Wicker (R-MS; Age 73) retire?
Clear selection
Will Josh Hawley (R-MO; Age 44) retire?
Clear selection
Will Jon Tester (D-MT; Age 68) retire?
Clear selection
Nebraska (No poll)
Debbie Fischer announced her plan to run for re-election on May 14, 2021.