August 4, 2026
Primary Election
Your complete coverage of Missouri's August primary — constitutional amendments, General Assembly candidates, statewide and local races. Everything you need in one place.
Election Day
Tuesday, August 4, 2026
Polls open 6:00 AM to 7:00 PM. Bring a valid photo ID.
Our Coverage
Three pillars of election coverage. Click any tile to dive in.
Constitutional Amendments
Voter Guide
Complete voter guides for all four constitutional amendments on the August ballot — Amendments 1, 2, 4, and 5. Facts, both sides, and AFM's position.
Missouri Legislature
Running in 2026
Every Missouri House and Senate race on the ballot — incumbents, challengers, and open seats. Know who's running in your district before you vote.
Statewide & Local
Other Races of Note
Coverage of the statewide race on the August ballot and notable county-level races we're watching across Missouri. Check back as the election approaches.
Key Dates
Don't miss a deadline. Mark these on your calendar.
Voter Registration Deadline
Wednesday, July 8, 2026
Last day to register to vote in the August primary. Register online at the Missouri Secretary of State's website or at your local election authority.
No-Excuse Absentee Voting Begins
Tuesday, June 23, 2026
In-person no-excuse absentee voting begins at your local election authority's office. Check with your county clerk for hours and locations.
Mail-In Absentee Ballot Request Deadline
Wednesday, July 22, 2026
Last day to request a mail-in absentee ballot. Submit your request to your local election authority.
★ Election Day ★
Tuesday, August 4, 2026
Polls open 6:00 AM to 7:00 PM. Bring a valid photo ID.
Dates based on Missouri Secretary of State election calendar. Verify with your local election authority for any local-specific deadlines.
Official voter resources:
Why This Election Matters
Primary elections are where the real decisions get made.
Missouri's August 4, 2026 primary carries weight far beyond a typical primary election. Voters will decide four constitutional amendments that touch core questions of taxation, the proper role of government, and who gets to amend Missouri's foundational law. These aren't ordinary ballot measures — they reshape the rules under which Missouri governs itself.
Voters will also choose the candidates who'll appear on the November general election ballot for the Missouri House and Senate. In a state where many districts are effectively decided in the primary, August is where the real choices happen — not November.
Act for Missouri's commitment is the same on every race and every measure: tell you the facts, present both sides honestly, share where we stand and why, and respect your judgment. We don't tell you how to vote. We help you make sure your vote reflects what you actually believe — and that you have the information to defend it.
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