The 2026 Missouri State Senate Primary Elections will be held on August 4, 2026, to select nominees for various State Senate districts across Missouri. Voters will choose Democratic and Republican candidates who will advance to the general election in November, determining representation in the state legislature.
The 2026 Missouri State Senate Primary Elections will be held on August 4, 2026, to select nominees for various State Senate districts across Missouri. Voters will choose Democratic and Republican candidates who will advance to the general election in November, determining representation in the state legislature.
Missouri residents can register to vote online via the Missouri Secretary of State's website, by mail, or in person at local election offices. Voters must present a valid photo ID at the polls, such as a Missouri driver’s license, state ID, military ID, or passport; early voting is available in-person at designated locations from July 22 to August 2, 2026, and absentee ballots can be requested by July 20 for those qualifying under state law.