1990Final results
1990 election for Montana House District 1
Montana House of Representatives · Montana
Mary Lou Peterson (R) won with 58.7% of the vote, defeating Allen R. Vanhorn (D) by 17.3 points.
Mary Lou PetersonRepublican · winner · incumbent
58.7%1,861
Allen R. VanhornDemocrat
41.3%1,312
3,173 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET