2006Flipped from RepublicanFinal resultsIncumbent defeated
2006 election for Wisconsin Senate District 31
Wisconsin State Senate · Wisconsin
Kathleen Vinehout (D) won with 51.6% of the vote, defeating Ron Brown (R) by 3.2 points, a seat Republicans won last time.
Kathleen VinehoutDemocrat · winner
51.6%31,895
Ron BrownRepublican · incumbent
48.4%29,890
61,785 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 2006
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET