2016Final results
2016 election for Washington's 10th District
U.S. House · Washington
Denny Heck (D) won with 58.7% of the vote, defeating Jim Postma (R) by 17.3 points.
Denny HeckDemocrat · winner
58.7%170,448
Jim PostmaRepublican
41.3%120,078
290,526 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Denny HeckNo Republican
$1.6M
Raised by the campaign
—
$1M
Spent by the campaign
—
$758.8K
Cash on hand
—
Campaign money: FEC, through Dec 31, 2016.
Source: FEC campaign filingsUpdated Dec 31, 2016