1980Flipped from DemocraticFinal resultsIncumbent defeated
1980 election for Wisconsin Senate District 10
Wisconsin State Senate · Wisconsin
James E. Harsdorf (R) won with 51.9% of the vote, defeating Michele G. Radosevich (D) by 3.8 points, a seat Democrats won last time.
James E. HarsdorfRepublican · winner
51.9%38,541
Michele G. RadosevichDemocrat · incumbent
48.1%35,690
74,235 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 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET