Majority of them are DemocRat - they see the handwriting on the wall -- As of Feb. 15, 2024, 50 members of Congress—seven members of the U.S. Senate and 43 members of the U.S. House—announced they would not seek re-election in 2024.--Retiring from public office, 2024 Name Party State Date announced Joe Manchin Democratic Party Democrat West Virginia November 9, 2023[1] Laphonza Butler Democratic Party Democrat California October 19, 2023[2][3] Debbie Stabenow Democratic Party Democrat Michigan January 5, 2023[4] Ben Cardin Democratic Party Democrat Maryland May 1, 2023[5] Tom Carper Democratic Party Democrat Delaware May 22, 2023[6] Mitt Romney Republican Party Republican Utah September 13, 2023[7] U.S. Senate members seeking other offices --Of the 43 U.S. House members not seeking re-election: 13—four Republicans and nine Democrats—are running for the U.S. Senate.---https://ballotpedia.org/List_of_U.S._Congress_incumbents_who_are_not_running_for_re-election_in_2024#:~:text=As%20of%20Feb.%2015%2C%202024,seek%20re%2Delection%20in%202024.