The 2018 Wisconsin gubernatorial election took place on November 6, 2018. It occurred concurrently with a Senate election in the state, elections to the state's U.S. House seats, and various other elections. Incumbent Republican Governor Scott Walker sought re-election to a third term, and was challenged by Democratic candidate and then-Superintendent of Public Instruction Tony Evers, as well as Libertarian Phil Anderson and independent Maggie Turnbull. Evers, along with his running mate Mandela Barnes, managed to defeat Walker and Lieutenant Governor Rebecca Kleefisch in a closely fought and widely watched race, ending unified Republican control of the state.

The 2018 United States Senate election in Wisconsin took place on November 6, 2018, concurrently with a gubernatorial election, U.S. House elections and various other state and local electoins. Incumbent Democratic senator Tammy Baldwin won re-election to a second term, defeating Republican nominee Leah Vukmir by more than 10 percentage points. This was one of 11 Democratic-held U.S. Senate seats up for election in a state Donald Trump won in the 2016 presidential election. The primary elections were held on August 14, with a filing deadline on June 1. Baldwin was unopposed for the Democratic nomination, while Vukmir defeated Charles Barman, Griffin Jones, George Lucia and Kevin Nicholson in the Republican primary.