1980Flipped from DemocraticFinal resultsIncumbent defeated
1980 election for Montana House District 21
Montana House of Representatives · Montana
Glenn Mueller (R) won with 58.1% of the vote, defeating William R. Baeth (D) by 16.3 points, a seat Democrats won last time.
Glenn MuellerRepublican · winner
58.1%1,606
William R. BaethDemocrat · incumbent
41.9%1,156
2,762 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