Missouri (MO)
Eligibility
Age: 18 (may register at 17 and a half)
ID Requirements
To Register: MO driver's license or state ID number, or last 4 of SSN. If neither, leave blank; must show ID when voting. No online voter registration available (paper form only). Voters without photo ID may cast a provisional ballot counted if signature matches registration.
To Vote: Photo ID required (Missouri or US government-issued)
Registration Methods
- Online: Residents can submit a voter registration application electronically through the state's website, rather than by mail or in person.
- Mail: Residents can register to vote by completing a paper registration form and submitting it by mail to the appropriate election office.
- In Person: Residents can register to vote by visiting a designated government office, such as a county clerk's office or DMV, and completing a registration form on site.
Early Voting
A period before Election Day during which voters can cast their ballots in person at designated polling locations. The length of the early voting period varies by state.
No-excuse in-person absentee voting available two weeks before election day.
Mail-In / Absentee Voting
A voting method where ballots are automatically mailed to all registered voters without requiring a specific request. States that use this approach conduct elections primarily or entirely by mail.
Absentee ballot available; excuse required. No-excuse mail-in option available but ballot must be notarized.
Felony Voting Rules
State laws governing whether and when people with felony convictions can vote. Policies range from no restrictions to permanent disenfranchisement, with most states restoring rights at some point after sentencing.
Rights restored upon final discharge from sentence, including completion of any probation or parole term. People on probation or parole for a felony may not vote.
Documentation Needed
- Valid photo ID or non-photo ID with affidavit
- Proof of residency
Recent News
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ACLU Sues Over Missouri Congressional Redistricting Map
Missouri's new congressional map designed to eliminate a Democratic-held seat faces an ACLU lawsuit and anti-redistricting activists submitted signatures to place the map before voters.
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Missouri Pre-Files Election Interference Bills for 2026 Session
Missouri pre-filed bills requiring hand-counts of nearly all ballots statewide and creating an office to investigate alleged election law violations.
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Missouri as 2026 Direct Democracy Battleground
Missouri is a key battleground for direct democracy in 2026, with multiple ballot measures and legislative efforts to restrict the citizen initiative process.
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Missouri Lawmakers Place Congressional District Majority Requirement on 2026 Ballot
Amendment 4 on the 2026 ballot would require citizen initiatives to win majorities in all eight congressional districts; no initiative since 2020 would have met this standard.
Sources
Last verified: Feb 24, 2026
Change Log
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