2018Final results
2018 election for Washington's 10th District
U.S. House · Washington
Denny Heck (D) won with 61.5% of the vote, defeating Joseph Brumbles (R) by 23.1 points.
Denny HeckDemocrat · winner
61.5%166,196
Joseph BrumblesRepublican
38.5%103,838
270,034 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.
Denny HeckJoseph Brumbles
$1.6M
Raised by the campaign
$5.2K
$1.2M
Spent by the campaign
$6.1K
$1.2M
Cash on hand
-$660
Campaign money: FEC, through Dec 31, 2018; FEC, through Nov 26, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018