MADISON, Wis. — Wisconsin voters are casting ballots Tuesday in a statewide partisan primary election that could reshape the political battlefield ahead of the November 2026 midterm elections.

The primary includes contests for governor, lieutenant governor, attorney general, secretary of state, state treasurer and seats in the U.S. House, making the election an important test for both parties.

Wisconsin is one of the country's most closely watched political battlegrounds. The state's competitive elections have repeatedly made it an important target for both Republicans and Democrats, and the 2026 governor's race is attracting particular attention because incumbent Democratic Gov. Tony Evers is not seeking another term.

On the Republican side, Congressman Tom Tiffany is among the leading candidates in the governor's contest. The Democratic field includes David Crowley, along with other candidates competing for the party nomination.

The outcome will determine which candidates advance to the November 3 general election.

The Wisconsin primary also has significance beyond the governor's mansion. Congressional races are being watched closely as national Democrats and Republicans attempt to build momentum ahead of a midterm election that could determine control of Congress.

For national political strategists, Wisconsin offers an early look at voter priorities in a state where elections can be decided by narrow margins.

The primary is also taking place amid a broader Democratic debate over the party's direction. Recent Democratic primary victories by progressive candidates in several states have raised questions about whether voters are moving toward more left-wing candidates ahead of the midterms.

Wisconsin's Democratic gubernatorial contest has received particular attention because Francesca Hong, a state lawmaker and democratic socialist, has emerged as a notable progressive candidate. Her campaign has focused on issues including child care, public education and regulation of AI data-center development.

Republicans, meanwhile, are looking to maintain their influence in a state that remains highly competitive at the national level.

Election officials say Wisconsin polling places are open from 7 a.m. to 8 p.m., and voters can register at their polling place on Election Day with the required proof of residence.

The primary results could provide the first major clues about which issues and candidates are best positioned to mobilize voters before November.

With control of Congress and key state offices at stake this year, Wisconsin's primary is emerging as one of the most closely watched political contests of the summer.