O'Fallon Polling Places, Hours & Absentee Rules

Elections and Campaign Finance Missouri 4 Minutes Read ยท published March 08, 2026 Flag of Missouri

O'Fallon, Missouri voters should know where to vote, when polls are open, and how absentee ballots work for local, state and federal elections. This guide explains polling place assignment, typical polling hours, how to request and return an absentee ballot, and who administers elections affecting O'Fallon residents. Where city administration defers to county election authorities or the Missouri Secretary of State, links point to the official offices that publish forms, deadlines and procedures so you can act with confidence.[1]

Verify your polling place before election day.

Polling places & hours

Polling locations for O'Fallon residents are assigned and administered by the county election authority. Polling place addresses and precinct assignments change occasionally; check your precinct before each election. Typical statewide polling hours in Missouri historically run from 6:00 a.m. to 7:00 p.m., but confirm current hours with the official election authority for your precinct.[1]

  • Poll opening and closing times: confirm with county election authority.
  • Bring an acceptable form of ID where required; verify acceptable ID types with the official source.
  • If you have accessibility needs, contact the election office in advance for accommodations.

Absentee ballots (mail-in and early voting)

Missouri provides absentee voting options for eligible voters; applications and instructions are published by the Missouri Secretary of State and by the local election authority. To request an absentee ballot, use the official application and follow the submission method and deadlines published by the Secretary of State or county office.[2]

  • Application deadlines and return deadlines: follow the dates on the official absentee ballot page.
  • Where to get the form: official Secretary of State and county election webpages publish the absentee application.
  • Fees: none for voting; see official pages for any administrative fees (not specified on the cited page).

Penalties & Enforcement

Election offenses (for example, fraudulent voting, tampering with ballots, or knowingly providing false information on election forms) are enforced under Missouri law and through county prosecutors and election authorities. Specific fines, statutory penalties, escalation rules and non-monetary sanctions are set by state statute and prosecutorial practice; the official election guidance pages used here do not list specific fine amounts or escalation schedules, so those figures are "not specified on the cited page." For suspected criminal conduct at polling places or involving ballots, the county prosecutor and the Secretary of State may pursue charges or injunctions.[2]

  • Monetary fines: not specified on the cited page.
  • Escalation and repeat offences: not specified on the cited page; criminal prosecution is possible under state law.
  • Non-monetary sanctions: charges, injunctions, and court-ordered remedies may apply under state enforcement.
  • Enforcers and complaint pathways: county election authority for administrative issues; county prosecutor for criminal matters.

Applications & Forms

The official absentee ballot application is published by the Missouri Secretary of State and by the local election authority. Name and number of a statewide absentee form are provided on the Secretary of State site; local jurisdictions publish county-specific instructions. If a specific municipal form for O'Fallon is required it is provided through the county election authority or the City Clerk's office where applicable; consult the official links below for the current document and submission process.[2]

Use only official forms from the Secretary of State or county election office.

How to report problems and appeal

If you encounter problems (wrong precinct assignment, missing ballot, rejected absentee ballot), take these actions:

  • Document the issue: keep copies, dates and any receipt numbers.
  • Contact the county election authority immediately and follow their instructions.
  • If unresolved, contact the prosecuting attorney's office or the Secretary of State election help for further remedies.

FAQ

Who runs polling places for O'Fallon?
The county election authority administers polling places for O'Fallon; the City Clerk provides local information and links to county resources.[1]
How do I request an absentee ballot?
Request an official absentee ballot application from the Missouri Secretary of State or your county election office and submit as instructed on the official page.[2]
What ID do I need to vote?
Acceptable ID types are listed by the state and county; check the official election pages for the current list.

How-To

  1. Confirm voter registration and precinct online via the county election authority.
  2. Download or request the official absentee ballot application from the Secretary of State or county office and complete it.
  3. Submit the absentee application by the deadline specified on the official site; follow the stated return method for your ballot.
  4. Track your absentee ballot where tracking is available and retain proof of submission if applicable.
  5. If your ballot is rejected or you experience issues, contact the county election office immediately and consider formal appeal routes listed by the Secretary of State.

Key Takeaways

  • Always verify your polling place and hours before election day.
  • Use only official absentee forms from the Secretary of State or county office.
  • Contact the county election authority first for local questions or problems.

Help and Support / Resources


  1. [1] City of O'Fallon - City Clerk and local elections information
  2. [2] Missouri Secretary of State - Absentee ballots and election rules