Roger Roth Republican Roger Roth Republican The 2018 Wisconsin Senate elections were held on Tuesday, November 6, 2018, at the Fall general election in Wisconsin.

Seventeen of the 33 seats in the Wisconsin Senate were up for election—the odd-numbered districts.

[1] Statewide results of the 2018 Wisconsin State Senate election:[2] Seats where the margin of victory was under 10%: Two special elections were held during 2018 for vacancies in the state Senate.

Democrats won both special elections, for a net gain of two seats.

Results of the 2018 Wisconsin State Senate election by district:[2]