2016 Wisconsin Senate election

The 2016 Wisconsin Senate elections were held on Tuesday, November 8, 2016, at the Fall general election in Wisconsin. Sixteen of the 33 seats in the Wisconsin Senate were up for election—the even-numbered districts. Before the election, Republicans held 18 seats, Democrats held 14 seats, and 1 seat was vacant. Of the seats up for election, 8 were held by Democrats, 7 were held by Republicans, and 1 was vacant due to the recent death of a Republican member. The primary election was held on August 9, 2016.

Republicans consolidated their control of the Senate, flipping one Democrat-held seat, and entered the 103rd Wisconsin Legislature with 20 of 33 Senate seats.

Statewide results of the 2016 Wisconsin State Senate election:

Seats where the margin of victory was under 10%: