1980Flipped from DemocraticFinal results
1980 election for Montana Senate District 27
Montana State Senate · Montana
Larry J. Tveit (R) won with 49.2% of the vote, defeating Harold L. Mercer (D) by 6.8 points, a seat Democrats won last time.
Larry J. TveitRepublican · winner
49.2%3,576
Harold L. MercerDemocrat
42.4%3,085
Gene DelaneyIndependent
8.4%607
7,268 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