
Two Republican incumbents lost in the Montana Senate primaries on June 2. This was the first year since 2010 in which more than one incumbent lost in the chamber's primaries. At the start of Montana's 2025 state legislative session, nine Republican senators voted with the chamber's Democrats to change procedural rules for the session. In…

New congressional maps are still possible in Alabama and Louisiana, while South Carolina will use its existing congressional map again this year. After new congressional maps took effect in Florida and Tennessee earlier this month, 2026 redistricting pursuits are a wrap in all but a few states. A panel of federal judges blocked Alabama's 2023…

Three candidates—Jocelyn Benson, Chris Swanson, and Kim Thomas—are running in the Democratic primary for Governor of Michigan on August 4, 2026. Benson and Swanson lead in polling, fundraising, and media attention ahead of the primary. Incumbent Gov. Gretchen Whitmer (D) is term-limited, leaving the office open in 2026. The Associated Press' Joey Cappelletti wrote that…

So far this year, 43 state legislative incumbents—eight Democrats and 35 Republicans—have lost to primary challengers. Across the 14 states that have held primaries, 2.6% of incumbents running for re-election have lost, or 11.4% of the incumbents who were contested. That represents a 31% decrease from 2024 and sits 23% below the average of 56…

Keisha Lance Bottoms (D) defeated six other candidates to win the Democratic Party primary for governor on May 19, 2026, receiving 58% of the vote. Lance and three other candidates — Geoff Duncan, Jason Esteves, and Michael Thurmond — led in polling, fundraising, and media coverage ahead of the primary. Bottoms was the Mayor of…

In 2026, 70.5% of the state legislative incumbents running for election in South Dakota will face primary contests, a record high since 2010. In total, 55 incumbents face contested primaries across the South Dakota House and Senate. The average number of incumbents contested each election cycle since 2010 was 24. All 55 of the contested…

In 2026, 10.4% of the state legislative incumbents running for election in Utah will face primary contests, the smallest share in the most recent four cycles and below the average of 12.1% each cycle between 2010 and 2024. In total, eight incumbents face contested primaries across the Utah House and Senate. The average number of…

Julia Letlow (R) and John Fleming (R) advanced to a June 27 runoff in the Republican primary for U.S. Senate in Louisiana, with 45% and 28% of the vote, respectively. Incumbent Bill Cassidy finished third, with 24% of the vote. President Donald Trump (R) and Gov. Jeff Landry (R) endorsed Letlow. According to Axios' Alex…

The June 2 Republican primaries for Montana Senate will be the first since the Montana Republican Party censured a group of Republican senators for voting with Democrats during the 2025 legislative session. At the start of Montana's 2025 state legislative session, nine Republican senators voted with the chamber's Democrats to change procedural rules for the…

Since the U.S. Supreme Court decided Louisiana v. Callais on April 29, two more states — Florida and Tennessee — have redrawn their congressional maps, Virginia’s map was blocked from certification by the Virginia Supreme Court, and the Alabama Legislature approved legislation that would set special primary elections in affected districts if courts roll back…