| Election Name: | 2016 Wisconsin Senate election |
| Country: | Wisconsin |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2014 Wisconsin Senate election |
| Previous Year: | 2014 |
| Next Election: | 2018 Wisconsin Senate election |
| Next Year: | 2018 |
| Seats For Election: | 16 of 33 seats in the Wisconsin State Senate 17 seats needed for a majority |
| 1Blank: | Seats up |
| 2Blank: | Races won |
| Image1: | Sen. Fitzgerald (3523124714).jpg |
| Image1 Size: | x150px |
| Leader1: | Scott Fitzgerald |
| Party1: | Republican Party of Wisconsin |
| Last Election1: | 19 |
| Seats1: | 20 |
| Seat Change1: | 1 |
| Popular Vote1: | 618,589 |
| Percentage1: | 48.62% |
| 1Data1: | 8 |
| 2Data1: | 9 |
| Image2 Size: | x150px |
| Leader2: | Jennifer Shilling |
| Party2: | Democratic Party of Wisconsin |
| Last Election2: | 14 |
| Seats2: | 13 |
| Seat Change2: | 1 |
| Popular Vote2: | 639,545 |
| Percentage2: | 50.26% |
| 1Data2: | 8 |
| 2Data2: | 7 |
| President | |
| Before Election: | Mary Lazich |
| Before Party: | Republican Party of Wisconsin |
| After Election: | Roger Roth |
| After Party: | Republican Party of Wisconsin |
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.[1]
Statewide results of the 2016 Wisconsin State Senate election:[2]
| Seats | Party (majority caucus shading) | Total | |||
|---|---|---|---|---|---|
| Democratic | Republican | ||||
| nowrap colspan=2 | Last election (2014) | 6 | 11 | 17 | |
| nowrap style="font-size:80%" colspan=2 | Total after last election (2014) | 14 | 19 | 33 | |
| nowrap style="font-size:80%" colspan=2 | Total before this election | 14 | 18 | 32 | |
| Up for election | 8 | 8 | 16 | ||
| of which: | nowrap style="font-size:80%" | Incumbent retiring | 1 | 0 | 1 |
| nowrap style="font-size:80%" | Vacated | 0 | 1 | 1 | |
| nowrap style="font-size:80%" | Unopposed | 5 | 3 | 8 | |
| nowrap style="background:#ccc" colspan=2 | This election | 7 | 9 | 16 | |
| nowrap style="font-size:80%" colspan=2 | Change from last election | 1 | 1 | ||
| nowrap style="font-size:80%" colspan=2 | Total after this election | 13 | 20 | 33 | |
| nowrap style="font-size:80%" colspan=2 | Change in total | 1 | 2 | ||
| Party | Candi- dates | Votes | Seats | |||||
|---|---|---|---|---|---|---|---|---|
| % | +/– ! | % | ||||||
| 11 | 618,589 | 48.62% | 9 | 1 | 56.25% | |||
| 13 | 639,545 | 50.26% | 7 | 1 | 43.75% | |||
| Integrity Party | 1 | 2,093 | 0.16% | 0 | 0.00% | |||
| Scattering | 12,126 | 0.95% | 0 | 0.00% | ||||
| Total | 25 | 1,272,353 | 100.00% | 16 | 100.00% | |||
Seats where the margin of victory was under 10%:
| Dist. | Incumbent | This race | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Member | Party | First elected | Status | Candidates | Results | ||||
| 02 | Rep. | 1987 | Ran |
| Incumbent re-elected | ||||
| 04 | Dem. | 2004 | Ran |
| Incumbent re-elected | ||||
| 06 | Dem. | 2012 | Did not run |
| Incumbent retired. New member elected. Democratic hold. | ||||
| 08 | Rep. | 1992 | Ran |
| Incumbent re-elected | ||||
| 10 | Rep. | 2000 | Ran |
| Incumbent re-elected | ||||
| 12 | Rep. | 2012 | Ran |
| Incumbent re-elected | ||||
| 14 | Rep. | 2004 | Ran |
| Incumbent re-elected | ||||
| 16 | Dem. | 2004 | Ran |
| Incumbent re-elected | ||||
| 18 | Vacant |
| Incumbent died. New member elected. Republican hold. | ||||||
| 20 | Rep. | 2004 | Ran |
| Incumbent re-elected | ||||
| 22 | Dem. | 1996 | Ran |
| Incumbent re-elected | ||||
| 24 | Dem. | 2003 | Ran |
| Incumbent defeated. New member elected. Republican gain | ||||
| 26 | Dem. | 1962 | Ran |
| Incumbent re-elected | ||||
| 28 | Rep. | 1998 | Ran |
| Incumbent re-elected | ||||
| 30 | Dem. | 2000 | Ran |
| Incumbent re-elected | ||||
| 32 | Dem. | 2011 | Ran |
| Incumbent re-elected | ||||