MO · How to vote
Voting in Missouri.
Three ways to vote, three deadlines. ID rules and vote-by-mail policy below — verify the specifics with the Missouri Secretary of State at the link.
1Official source of record
Missouri Secretary of State — Elections
VOTER ID REQUIREMENTS
Missouri requires a photo ID to vote. Accepted: Missouri driver's license, passport, military ID, or other government-issued photo ID. A non-photo ID plus a signed statement is also accepted.
VOTE BY MAIL
Absentee voting available with a valid reason. In-person absentee voting also available.
3NCSL voter ID requirements2026-04-153NCSL absentee + VBM rules2026-04-15
Official action — MO
The state’s own tools, with links to verify.
Each card below routes to the official Missouri system. Where the state delegates to county Supervisors of Elections, the card says so honestly.
Statewide→
Check my registration
Not available
Register / update online
**MO has no OVR for new registrations.** Paper form mailed to county clerk / election authority. Updates only allowed online.
Statewide→
Find my polling place
Statewide→
Preview my ballot
County
Request a mail ballot
State PDF; submitted to local election authority. EXCUSE REQUIRED. No-excuse in-person added 2022; no-excuse mail still requires excuse.
Not available
Track my mail ballot
**No statewide ballot tracker.** Some local LEAs (St. Louis County, Jackson County, KC) offer per-jurisdiction tracking.
Statewide→
See who's on the ballot
Candidate-placement DB, auto-updated. Primary filing 2026-02-24 → 2026-03-31.
Statewide→
Statewide ballot measures
Per-cycle list. Initiative process active.
Statewide→
Live + past results
Election Night Reporting; live + historical archive.
Statewide→
Election calendar
Primary 2026-08-04, general 2026-11-03.
1UOCAVA · military & overseas voters
Federal deadlines for Missouri
Active-duty service members, their families, and U.S. citizens overseas have separate deadlines under UOCAVA. Sourced live from the U.S. Federal Voting Assistance Program.
2026-08-04Ballot Request — State PrimaryReceived by
2026-08-04Ballot Return — State PrimaryReturn by Email or Fax: Received by
2026-08-04Ballot Return — State PrimaryReturn by Mail: Postmarked by**
2026-08-04Registration — State PrimaryReceived by*
2026-11-03Ballot Request — General ElectionReceived by
2026-11-03Ballot Return — General ElectionReturn by Mail: Postmarked by**
2026-11-03Ballot Return — General ElectionReturn by Email or Fax: Received by
Cite this
turnout.app/how-to-vote/mo · 2026-05-02 · NCSLOther states
ALAlabamaAKAlaskaAZArizonaARArkansasCACaliforniaCOColoradoCTConnecticutDEDelawareDCDistrict of ColumbiaFLFloridaGAGeorgiaHIHawaiiIDIdahoILIllinoisINIndianaIAIowaKSKansasKYKentuckyLALouisianaMEMaineMDMarylandMAMassachusettsMIMichiganMNMinnesotaMSMississippiMTMontanaNENebraskaNVNevadaNHNew HampshireNJNew JerseyNMNew MexicoNYNew YorkNCNorth CarolinaNDNorth DakotaOHOhioOKOklahomaOROregonPAPennsylvaniaRIRhode IslandSCSouth CarolinaSDSouth DakotaTNTennesseeTXTexasUTUtahVTVermontVAVirginiaWAWashingtonWVWest VirginiaWIWisconsinWYWyoming