When Is Wisconsin Republican Primary 2025. Joe biden (d) won the democratic primary, and donald trump (r) won the republican primary. Eric hovde, a wealthy businessman backed by former president donald j.

Research all candidates and measures on your personal ballot in the wisconsin primary election on tuesday, august 13, 2025. A republican party primary took place on august 13, 2025, in wisconsin to determine which republican candidate would run in the state’s general election on november 5, 2025.