St. Clair County, Illinois: 2026 ballot

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

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

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

Registering to vote

Not registered yet? You can still register and vote on Election Day in Illinois. You'll register in person and will usually need ID and proof of where you live. Where to go (your polling place, a vote center or the election office) depends on your county.

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 Illinois

  • Mail ballots sent by mail must arrive by Nov 17 (ballots arriving after Election Day must meet the state's postmark rules).
  • Mail ballots returned in person are due by Nov 3.
  • If there's a problem with your mail ballot (a missing signature, for example), you can fix it until Nov 17.
  • Results are certified by counties by Nov 24 and by the state by Dec 4. 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: St. Clair County's elected officials: commissioners, sheriff and county officers, school board, mayors and city councils.

County (24)

Next elections here

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