The Brief Wisconsin voters will head to the polls to cast ballots in the 2026 August primary. Wisconsin voters will head to the polls to cast ballots in the 2026 August primary election on Tuesday, Aug. 11. If you are unsure of where to vote, visit the MyVote Wisconsin website – each municipality has its own polling places. Enter your address on the MyVote Wisconsin website to see what you'll be voting for Tuesday. To check if you are registered, visit the MyVote Wisconsin website.