
On October 22, 2025, former U.S. Senator John E. Sununu (R) announced his campaign for U.S. Senate in New Hampshire in 2026. Incumbent Jeanne Shaheen (D), who defeated Sununu in 2008, is retiring from public office. In the Republican primary, Sununu will face two other candidates, former U.S. Sen. Scott Brown and Tejasinha Sivalingam. On…

As of Sept. 30, 2025, the end of the most recent party committee campaign finance filing period, the three committees associated with the Democratic Party have raised a cumulative $251 million and spent $234 million in the 2026 election cycle, while the three committees associated with the Republican Party have raised $291 million and spent…

Thirty-nine members of the U.S. Congress—eight U.S. Senate members and 31 U.S. House members—have announced they will not seek re-election in 2026. Compared to previous election cycles, 39 is the most retirement announcements we have followed at this point since 2018. Since our Sept. 15 update, four U.S. House members have announced that they will…

Colin Allred (D), James Talarico (D), and three other candidates are running in the Democratic primary for U.S. Senate in Texas on March 3, 2026. As of October 2025, Allred and Talarico led the candidate field in polling, fundraising, and media attention. The filing deadline is December 8, 2025. Axios’ Stephen Neukam described the primary…

Joan Huffman (R), Mayes Middleton (R), Aaron Reitz (R), and Chip Roy (R) are running in the Republican primary election for Texas Attorney General on March 3, 2026. The filing deadline is December 8, 2025. Incumbent Ken Paxton (R) is running in the Republican primary for U.S. Senate in Texas in 2026. The Texas Tribune’s…

Rep. Seth Moulton (D-Mass.) announced on Oct. 15, 2025, that he will run to represent Massachusetts in the U.S. Senate in 2026 rather than for another term in the U.S. House of Representatives. Politico’s Kelly Garrity wrote that “Moulton will challenge Sen. Ed Markey for his Senate seat in 2026, setting up one of the…

Incumbent Tony Gonzales (R), Brandon Herrera (R), and Susan Storey Rubio (R) are running in the Republican primary for Texas’ 23rd Congressional District on March 3, 2026. The filing deadline is December 8, 2025. This is a rematch of the 2024 primary. Gonzales defeated Herrera 50.6%–49.4% in the runoff after neither candidate won a majority…

Maine Gov. Janet Mills has announced her candidacy for U.S. Senate against incumbent Susan Collins (R) in 2026. In her launch video, Mills said, “I won’t sit idly by while Maine people suffer and politicians like Susan Collins bend the knee as if this were normal.” Mills is finishing her second term as governor. She…

Rep. Wesley Hunt (R-Texas) announced on Oct. 6, 2025, that he will run to represent Texas in the U.S. Senate in 2026 rather than for another term in the U.S. House of Representatives. According to Politico’s Brakkton Booker, “The race for the Republican nomination in the Lone Star State will likely be one [of] the…

U.S. Rep. David Schweikert (R-Ariz.) announced on Sept. 30, 2025, that he will run for governor of Arizona in 2026 rather than for another term in the House of Representatives. As of Sept. 30, independent race forecasters The Cook Political Report, Sabato’s Crystal Ball, and Inside Elections have rated the 2026 general election for the…