See exactly who is on your ballot — ZIP code is all you need
Marquee races on the Missouri primary ballot
Missouri's August 4 ballot is measure-heavy: four constitutional amendments are decided at the primary, alongside U.S. House and state legislative nominations.
Candidate fields reflect declared major candidates as of this page's last update and can change until ballots are certified. Enter your ZIP above for the full, address-specific list.
What's on the Missouri primary ballot?
Primaries decide which candidates appear on the November ballot. Depending on where you live in Missouri, your 2026 primary ballot can include U.S. Senate and U.S. House nominations, statewide offices, state legislative seats, and county or city contests. Enter your ZIP code above to see the exact races and candidates for your area — with bios, priorities, and campaign-finance data.
Key things to know
- Primary rules (open, closed, or semi-open) vary by state — check whether you need to be registered with a party to vote in its primary.
- Registration deadlines usually fall two to four weeks before the primary. Confirm yours with your state election office.
- Winners advance to the general election on Tuesday, November 3, 2026.
Browse the full Missouri voter guide →
Primary dates are statutory dates compiled by the National Conference of State Legislatures and can change by legislative action. Always confirm with your state or local election office.