1980Final results
1980 election for Wisconsin Assembly District 51
Wisconsin State Assembly · Wisconsin
Joseph E. Tregoning (R) won with 68.8% of the vote, defeating Terry McDonald (D) by 37.6 points.
Joseph E. TregoningRepublican · winner · incumbent
68.8%14,833
Terry McDonaldDemocrat
31.2%6,733
21,568 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