2004Final results
2004 election for Oregon House District 4
Oregon House of Representatives · Oregon
Dennis Richardson (R) won with 70.8% of the vote, defeating Richard Koopmans (D) by 41.6 points.
Dennis RichardsonRepublican · winner · incumbent
70.8%21,649
Richard KoopmansDemocrat
29.2%8,937
30,586 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 2004
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET