
This year’s filing deadline for candidates running for the U.S. House of Representatives in Montana was March 4, 2026. Three primaries — two Democratic and one Republican — are contested this year. There were three contested primaries in 2024, four in 2022, two in 2020, one in 2018, none in 2016, and two in 2014.…

Voters in New Mexico will elect one member to the U.S. Senate in the general election on November 3, 2026. As of March 31, 2026, Democrats were the only major party with a ballot-qualified candidate. If a Republican candidate does not qualify, it would be the first since 1914 without candidates from both major parties…

Sen. Alan Armstrong (R-Okla.) signed an affidavit on March 24, 2026, stating that he will not run to represent Oklahoma in the U.S. Senate in 2026. On March 24, 2026, Oklahoma Gov. Kevin Stitt (R) appointed Armstrong to represent the state in the U.S. Senate. Markwayne Mullin (R) previously held the seat before he resigned…

On March 24, 2026, President Pro Tempore Chuck Grassley (R-Iowa) swore Sen. Alan Armstrong (R-Okla.) into the U.S. Senate, filling the vacancy in Oklahoma’s class II seat. The vacancy began on March 23, 2026, after Markwayne Mullin (R) resigned from the U.S. Senate to serve as the U.S. secretary of homeland security in President Donald…

Rep. Sam Graves (R-Mo.) announced on March 27, 2026, that he will not seek re-election to the U.S. House of Representatives in 2026. In a statement announcing his retirement, Graves said, “After considerable reflection, 2026 will be my final year in Congress. This wasn’t an easy decision, but it’s the right one. I believe in…

On March 17, 2026, the National Republican Congressional Committee (NRCC) released an initial list of nine candidates participating in its MAGA Majority program in 2026. According to NRCC, the program, formerly known as Young Guns, "highlights a slate of strong candidates running in key battleground districts across the country who embody the Trump agenda: securing…

This year’s filing deadline for candidates running for the U.S. House of Representatives in Idaho was Feb. 27, 2026. Ten candidates — four Democrats and six Republicans — are running for Idaho’s two U.S. House districts. That’s five candidates per district. There were three candidates per district in 2024, four in 2022, 3.5 in 2020,…