1970Final results
1970 election for Montana Senate District 13
Montana State Senate · Montana
William R. Mackay (R) won with 70.0% of the vote, defeating D. W. Columbus (D) by 40.0 points.
William R. MackayRepublican · winner · incumbent
70.0%3,795
D. W. ColumbusDemocrat
30.0%1,625
5,420 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