The 2026 U.S. House Primary Elections in Missouri will be held on August 4, 2026, to select Democratic and Republican nominees for Missouri's eight congressional districts. Voters will choose candidates who will advance to the general election in November 2026, where they will compete for seats in the U.S. House of Representatives.
The 2026 U.S. House Primary Elections in Missouri will be held on August 4, 2026, to select Democratic and Republican nominees for Missouri's eight congressional districts. Voters will choose candidates who will advance to the general election in November 2026, where they will compete for seats in the U.S. House of Representatives.
To vote in Missouri's 2026 primary, registered voters must cast their ballot either in person on Election Day, August 4, 2026, or during the early voting period from July 25 to August 2, 2026. Voters must present a valid photo ID, such as a Missouri driver's license, state ID, passport, or military ID; those without ID may cast a provisional ballot. Registration must be completed by July 5, 2026, either online, by mail, or in person at a local election office.