1978Final results
1978 election for California's 31st District
U.S. House · California
Charles H. Wilson (D) won with 67.8% of the vote, defeating Don Grimshaw (R) by 35.5 points.
Charles H. WilsonDemocrat · winner
67.8%55,667
Don GrimshawRepublican
32.2%26,490
82,157 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 1978
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET