2018Final results
2018 election for Oregon's 3rd District
U.S. House · Oregon
Earl Blumenauer (D) won with 72.6% of the vote, defeating Tom Harrison (R) by 52.8 points.
Earl BlumenauerDemocrat · winner
72.6%279,019
Tom HarrisonRepublican
19.8%76,187
Marc W. KollerIndependent
5.6%21,352
Gary Lyndon DyeLibertarian
1.5%5,767
Michael MarshConstitution
0.4%1,487
384,326 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Earl BlumenauerTom Harrison
$1.5M
Raised by the campaign
$770
$1.6M
Spent by the campaign
$304
$892.4K
Cash on hand
$466
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018
The candidates
Earl Blumenauer (D)Tom Harrison (R)Marc W. Koller (I)
Also on the ballot: Gary Lyndon Dye (Libertarian), 1.5%; Michael Marsh (Constitution), 0.4%