Jefferson County, Missouri: 2026 ballot

Last updated Sat, Nov 7, 1:34 PM ET

County, city, school and local races and measures on the November 3, 2026 ballot in Jefferson County. Statewide, legislative and congressional races are on the Missouri page; which districts you're in depends on your address.

Not sure how to decide? Who should I vote for in Jefferson County? Our nonpartisan guide →

See your members of Congress and every race and measure on your ballot in Jefferson County, from your address. Your address stays in your browser.Look up my races

Registering to vote

The deadline to register to vote in Missouri for this election was October 7. If you think you're registered, you can check your status at vote.gov.

From NASED's official 2026 deadlines. See vote.gov or your county election office for the rules where you live.

Key dates after you vote in Missouri

  • Mail ballots sent by mail must arrive by Nov 3.
  • Results are certified by counties by Nov 17 and by the state by Dec 8. Until then, results are unofficial.

Dates from NASED (the National Association of State Election Directors), compiled from state election calendars and checked by state election officials. Your county election office has the final word on your ballot.

Who holds office now: Jefferson County's elected officials: commissioners, sheriff and county officers, school board, mayors and city councils.

Courts (7)

County (11)

Next elections here

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