
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…

Six Democratic primaries for the Massachusetts Senate are scheduled for September 1, 2026. All 40 seats are up for election in the chamber, in which Democrats have a 35-5 majority. All six of those primaries qualified as battlegrounds under Ballotpedia’s battleground primary criteria. Two are open-seat contests — the 2nd Middlesex District and the 5th…

Victor Marx (R) defeated Scott Bottoms (R), Barbara Kirkmeyer (R), and Kelvin Wimberly (write-in) in the Republican primary for governor of Colorado on June 30, 2026. Incumbent Gov. Jared Polis (D) was term-limited. Bottoms, Kirkmeyer, and Marx led in fundraising and media attention. Axios Denver's John Frank wrote that the candidates were ideologically divided. Frank…

This year's filing deadline for candidates running for the U.S. House of Representatives in New Hampshire was June 12, 2026. This year ties with 2024 for the highest number of contested primaries since 2014. In total, four primaries — two Democratic and two Republican — are contested this year. In total, there were four contested…

Four candidates are running in the Republican primary for Florida's 7th Congressional District on August 18, 2026. Two candidates have led in media attention: Incumbent Cory Mills (R) and Ryan Elijah (R). Mills has been under investigation by the House Ethics Committee since 2025. According to Politico's Hailey Fuchs, Mills "allegedly held weapons contracts with…

Incumbent Richard Neal and Jeromie Whalen are running in the Democratic primary for Massachusetts' 1st Congressional District on Sept. 1. The election reflects nationwide trends of younger, more progressive Democrats challenging long-serving incumbents. The Boston Globe's Anjali Huynh writes, "As Democrats nationwide struggle to define their party identity, Massachusetts is confronting a rare phenomenon: a…

Candidates who Donald Trump (R) endorsed in 2026 primaries have won 220 of 227 (97%) of their races so far — one percentage point less than the 2020 election cycle, when 98% of Trump-endorsed candidates won their primaries. Those figures include scenarios in which Trump endorsed two candidates in the same race. In total, Trump…

Thirty Wyoming state legislative incumbents face primary contests in 2026, the third-most at any point since 2010. This is a 25% decrease in the number of incumbents facing challengers compared to 2024. All 30 of the contested incumbents are Republicans. Twenty-five are state representatives, and five are state senators. The only time a Democratic incumbent…

Salaam Bhatti (D), Jason Knapp (D), Shannon Taylor (D), and four other candidates are running in the Democratic primary for Virginia's 1st Congressional District on August 4, 2026. As of June 2026, Bhatti, Knapp, and Taylor led in endorsements and fundraising. The winner will face incumbent Rob Wittman (R) in the general election. The Virginia…

Incumbent Mike Thompson (D) and Eric Jones (D) advanced from the top-two primary for California's 4th Congressional District on June 2, 2026. Six Republicans and one independent candidate also ran. As of March 2026, Thompson (D) and Jones (D) led in fundraising and local media attention. Local political observers described the primary in terms of…