2010 Wisconsin Senate election
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17 of 33 seats in the Wisconsin State Senate 17 seats needed for a majority | |||||||||||||||||||||||||||||||||||||||||||
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Results of the elections: Republican hold Republican gain Democratic hold No election | |||||||||||||||||||||||||||||||||||||||||||
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| Elections in Wisconsin |
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The 2010 Wisconsin Senate elections were held on Tuesday, November 2, 2010. Seventeen of the 33 seats in the Wisconsin State Senate were up for election—the odd-numbered districts.[1] Before the election, 18 Senate seats were held by Democrats and 15 seats were held by Republicans. 10 Democratic seats and 7 Republican seats were up in this election. The primary election took place on September 14, 2010.
Republicans flipped four Democratic-held Senate seats and achieved a majority for the first time since 2004, entering the 100th Wisconsin Legislature with 19 of 33 State Senate seats.[2]
Close races
| Seats | Party (majority caucus shading) |
Total | ||
|---|---|---|---|---|
| Democratic | Republican | |||
| Last election (2008) | 8 | 8 | 16 | |
| Total after last election (2008) | 18 | 15 | 33 | |
| Total before this election | 18 | 15 | 33 | |
| Up for election | 10 | 7 | 17 | |
| of which: | Incumbent retiring | 2 | 2 | 4 |
| Vacated | ||||
| Unopposed | 2 | 2 | ||
| This election | 6 | 11 | 17 | |
| Change from last election | ||||
| Total after this election | 14 | 19 | 33 | |
| Change in total | ||||
Seats where the margin of victory was under 10%:
- State Senate district 31, 0.66%
- State Senate district 25, 2.58%
- State Senate district 5, 4.46% (gain)
- State Senate district 29, 4.64% (gain)
- State Senate district 21, 5.09% (gain)
- State Senate district 23, 8.47% (gain)
Outgoing incumbents
Retired
- Alan Lasee, (R–De Pere), representing District 1 since 1977, announced he would not seek re-election.[3]
- Judy Robson (D–Beloit), representing District 15 since 1998, announced she would not seek re-election.[4]
- Theodore Kanavas (R–Brookfield), representing District 33 since 2001, announced he would not seek re-election.[5]