1970Flipped from RepublicanFinal results
1970 election for Montana Senate District 20
Montana State Senate · Montana
W. Gordon McOmber (D) won with 50.1% of the vote, defeating Earl M. Berthelson (R) by 0.3 points, a seat Republicans won last time.
W. Gordon McOmberDemocrat · winner
50.1%4,032
Earl M. BerthelsonRepublican
49.9%4,009
8,041 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET