
Incumbent Marie Gluesenkamp Perez (D) and John Braun (R) advanced from the top-two primary in Washington's 3rd Congressional District on August 4, 2026. Perez and Braun defeated seven other candidates. As of July 2026, Perez, Braun, and Brent Hennrich (D) led in fundraising and local media attention. The Oregonian's Betsy Hammond said Perez "is one…

Shannon Taylor (D) defeated Salaam Bhatti (D), Jason Knapp (D), and four other candidates in the Democratic primary for Virginia's 1st Congressional District on August 4, 2026. Taylor, Bhatti, and Knapp led in endorsements and fundraising. Taylor will face incumbent Rob Wittman (R) in the general election. The Virginia Mercury's Shannon Heckt said, "Voters in…

Donavan McKinney (D) defeated incumbent Shri Thanedar (D) in the Democratic primary for Michigan's 13th Congressional District on August 4, 2026. Local radio station WDET's Russ McNamara said Thanedar was "facing a difficult primary opponent, State Representative Donavan McKinney. The progressive Democrat has already been endorsed by Black leaders in Detroit and other [progressives] like…

William Lawrence (D) defeated Bridget Brink (D) and Matt Maasdam (D) in the Democratic primary for Michigan's 7th Congressional District on August 4, 2026. Lawrence will face incumbent Tom Barrett (R), first elected in 2024, in the general election. As of May 2026, major forecasting organizations rated the general election a toss-up. The Detroit Free…

Abdul El-Sayed (D) defeated Haley Stevens (D) in the Democratic primary for U.S. Senate in Michigan on August 4, 2026. Two-term incumbent Gary Peters (D) did not run for re-election. Peters endorsed Stevens on July 13, 2026. Crain's Detroit Business' David Eggert said the primary was "Michigan’s first truly competitive Democratic Senate primary in 32…

Incumbent Don Beyer defeated Lorena Bruner, Michael Duffin, Adam Dunigan, and Mo Seifeldein in the Democratic primary for Virginia's 8th Congressional District on Aug. 4. The primary reflected a broader division within the Democratic Party, with challengers framing incumbents as establishment politicians doing too little to counter President Donald Trump (R) and the Republican Party.…

Incumbent Rep. Wesley Bell (D) defeated four other candidates in the Democratic primary for Missouri's 1st Congressional District on Aug. 4, 2026. Bell and Cori Bush (D) led in noteworthy endorsements and fundraising. At the time of the election, this primary was one of five in the 2026 election cycle in which a former member of the U.S. House of Representatives ran against an incumbent member. Bush represented…

Rep. Cleo Fields (D-La.) announced on July 21, 2026, that he will run in the special election for District 14 in the Louisiana Senate rather than for another term in the U.S. House of Representatives. Fields previously represented the district from 1988 to 1993, from 1997 to 2008, and from 2020 to 2025. According to…

In 2026, 25% of the state legislative incumbents running for election in New Hampshire will face primary contests, a record low since 2010. In total, 77 incumbents face contested primaries across the New Hampshire House and Senate. The average number of incumbents contested each year from 2010 to 2024 was 111. Sixteen of the contested…

Four hundred twenty-two candidates, the second most in any year since 2010, are running in Missouri’s Aug. 4 primaries. All 163 seats in the Missouri House of Representatives and 17 seats in the Missouri Senate are up for election this year. There are 62 open seats with no incumbent running for re-election. This is the…