The number of senators not running for re-election in 2024 is tied with the number who had announced they would not run at this point in the 2022 cycle, and higher than the numbers for 2020 and 2018. On the House side, the number of members not running is lower than the number at this point in the 2022 cycle, but higher than 2020 and 2018.

In total, 16 members of Congress—five senators and 11 representatives—have announced they will not seek re-election in 2024. The members of Congress not running for re-election include 12 Democrats—four in the Senate and eight in the House—as well as four Republicans—one senator and three House members.

Five senators had also announced they would not seek re-election at this point in the 2022 election cycle. Four had announced at this point in the 2020 cycle, and none had announced at this point in the 2018 cycle.

The 11 U.S. House members who have announced they are not running for re-election in 2024 are three fewer than the 14 members who had announced at this point in the 2022 election cycle, but more than the seven who had announced in 2020 and the nine who had announced in 2018.

Of the senators not running for re-election, Sens. Diane Feinstein (D-Calif.), Debbie Stabenow (D-Mich.), Ben Cardin (D-Md.), and Tom Carper (D-Del.) are retiring from public office. Sen. Mike Braun (R-Ind.) is running for governor of Indiana.

Ten of the 11 U.S. House members not running for re-election are running for the U.S. Senate, including seven running for the open seats in California, Delaware, Maryland, Michigan, and Indiana, specifically:

• Reps. Barbara Lee (D), Katie Porter (D), and Adam Schiff (D) are running to replace Feinstein;
• Rep. Lisa Blunt Rochester (D) is running to replace Carper;
• Rep. David Trone (D)  is running to replace Cardin;
• Rep. Elissa Slotkin (D) is running to replace Stabenow; and
• Rep. Jim Banks (R) is running to replace Braun.

Three other House members are challenging incumbent senators:

• Rep. Alex Mooney (R) is running against Sen. Joe Manchin (D) in West Virginia, though Manchin has not yet announced whether he will seek re-election;
• Rep. Rubén Gallego (D) is running against Sen. Kyrsten Sinema (I) in Arizona; and
• Rep. Colin Allred (D) is running against Sen. Ted Cruz (R) in Texas.

Rep. Victoria Spartz (R-Ind.) is the only House incumbent to announce retirement from public office.