1990Flipped from RepublicanFinal resultsIncumbent defeated
1990 election for Montana Senate District 22
Montana State Senate · Montana
Mignon Waterman (D) won with 60.4% of the vote, defeating A. T. Rasmussen (R) by 20.8 points, a seat Republicans won last time.
Mignon WatermanDemocrat · winner
60.4%5,221
A. T. RasmussenRepublican · incumbent
39.6%3,421
8,642 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