2018Final results
2018 election for Washington's 6th District
U.S. House · Washington
Derek Kilmer (D) won with 63.9% of the vote, defeating Douglas Dightman (R) by 27.8 points.
Derek KilmerDemocrat · winner
63.9%206,394
Douglas DightmanRepublican
36.1%116,675
323,069 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.
Derek KilmerDouglas Dightman
$2.4M
Raised by the campaign
$46.6K
$1.4M
Spent by the campaign
$42.4K
$3M
Cash on hand
$4.2K
Campaign money: FEC, through Dec 31, 2018; FEC, through Oct 17, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018