Congressional District: 2
PETROLEUM COUNTY
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Information about the upcoming election
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Issues with your mail ballot
Please contact your county election office to ask questions about:
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Your voter registration status
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How to register to vote and/or update your registration
County Election Office
Petroleum County Courthouse
Physical Address:
302 E Main St
Winnett, MT 59087
Mailing Address:
Box 226
Winnett, MT 59087
Hours:
Mon-Fri, 8 am to 5 pm
Election Day: 7 am to 8 pm
6/02/2026 Primary Election
This year in Petroleum County voters can vote at the polls or by mail as a registered absentee voter!
ABSENTEE VOTERS: Ballots will be mailed by May 8th. If you don't receive your ballot, damage it, make a mistake, or misplace your ballot, you can go in person to the Elections Office through Election Day to pick one up or receive a replacement ballot.
POLLING PLACE VOTERS: You can find your polling place using the Secretary of State's Voter Portal. We also have county polling place locations listed below. These are subject to change.
2026 Primary Election Polling Places
Petroleum County Courthouse Elections Office
Address: 302 E Main St, Winnett, MT
Hours: Election Day, Noon - 8:00 pm