1980Final results
1980 election for Montana's 1st District
U.S. House · Montana
Pat Williams (D) won with 61.4% of the vote, defeating John K. "jack" McDonald (R) by 22.9 points.
Pat WilliamsDemocrat · winner
61.4%112,866
John K. "jack" McDonaldRepublican
38.6%70,874
183,740 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1980
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Pat WilliamsJohn K. "jack" McDonald
$151K
Raised by the campaign
$35.7K
$144K
Spent by the campaign
$35.7K
$0
Cash on hand
$0
Campaign money: FEC, through Dec 31, 1980.
Source: FEC campaign filingsUpdated Dec 31, 1980