Missouri civic guide
The laws and deadlines that matter when you want to change something in Missouri: how to get public records, how public meetings work, and how to vote.
Your 2026 election
General election: Tuesday, November 3, 2026.
- Register by
- Online Oct 7 · Mail postmarked Oct 7 · In person Oct 7 (5 p.m.)
- Same-day registration
- No
- Early voting
- No-excuse in-person absentee Oct 20–Nov 2 (photo ID); excused from Sep 22
- Statewide ballot measures
- 5 on the ballot
- Amendment 3: Repeal the 2024 abortion-rights amendment, allow limited exceptions, and ban gender transition care for minors
- Amendment 6: Make the initiative process a fundamental right; require an 80% legislative vote to change voter-passed laws
- Proposition A: Approve or reject the 2025 congressional district map
- + 2 more
Titles as listed by official sources. Read the full text and the official summary before you vote.
Public records
Anyone can ask a government agency for copies of its records. You usually don't have to say why.
- Law
- Missouri Sunshine Law
- Citation
- RSMo ch. 610 (§§ 610.010-610.035)
- First response deadline
- By end of 3rd business day; longer with stated reasonable cause (§ 610.023.3)
Open meetings
Most government boards must meet in public and post notice ahead of time.
- Law
- Missouri Sunshine Law
- Citation
- RSMo ch. 610 (§§ 610.010-610.035)
Recording conversations
One-party consent for phone/wire calls (RSMo § 542.402); in-person rules less clear
This is about recording conversations. Recording officials in public is a separate question that courts decide case by case.
More to know
- Pre-registration age (sign up before 18)
- 17 and 6 months
- Ballot initiatives
- Yes. Citizens can petition to put new laws and constitutional amendments on the ballot.
What's bugging you in Missouri?
Pick an issue and we'll show you who handles it and help you write to them.
Start on Civic Ladder →Learn the skillsSources
- https://revisor.mo.gov/main/OneSection.aspx?section=610.023
- https://justia.com/50-state-surveys/recording-phone-calls-and-conversations
- https://www.ncsl.org/elections-and-campaigns/preregistration-for-young-voters
- https://ballotpedia.org/States_with_initiative_or_referendum
- https://www.sos.mo.gov/petitions/2026ballotmeasures
- https://www.usvotefoundation.org/vote/us/state-voting-information/MO
General civic information, not legal advice. Laws and deadlines change; confirm with the official office. Election details as researched 2026-10-17.