1972Final resultsIncumbent defeated
1972 election for Montana House District 12
Montana House of Representatives · Montana
6 seats: Hal Harper (R), Barbara Bennetts (D), Robert L. Marks (R), William C. Campbell (R), Ruth B. Castles (R), John F. Bell (R) won.
6 seatsHal HarperRepublican · winner
9.8%10,729
Barbara BennettsDemocrat · winner
9.7%10,587
Robert L. MarksRepublican · winner · incumbent
9.6%10,518
William C. CampbellRepublican · winner
9.2%10,098
Ruth B. CastlesRepublican · winner
8.7%9,499
John F. BellRepublican · winner
8.7%9,467
Terry MurphyDemocrat · incumbent
8.1%8,832
Dix C. ShevalierRepublican
8.0%8,771
Richard ReeseDemocrat
8.0%8,716
John G. BillingsDemocrat
7.1%7,741
Francis MitchellDemocrat
7.0%7,689
Charles MitchellDemocrat
6.0%6,532
109,179 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 1972
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET