2012Final results
2012 election for Wisconsin Senate District 12
Wisconsin State Senate · Wisconsin
Tom Tiffany (R) won with 56.2% of the vote, defeating Susan Sommer (D) by 15.8 points.
Tom TiffanyRepublican · winner
56.2%51,176
Susan SommerDemocrat
40.5%36,809
Paul O. EhlersIndependent
3.3%2,964
90,994 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET