1978Final results
1978 election for Oregon's 3rd District
U.S. House · Oregon
Robert B. Duncan (D) won with 84.6% of the vote, defeating Martin Simon (Oth) by 69.5 points.
Robert B. DuncanDemocrat · winner
84.6%151,895
Martin SimonOther party
15.1%27,120
179,460 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