1988Final results
1988 election for Washington's 5th District
U.S. House · Washington
Thomas Foley (D) won with 76.4% of the vote, defeating Marlyn Derby (R) by 52.8 points.
Thomas FoleyDemocrat · winner
76.4%160,654
Marlyn DerbyRepublican
23.6%49,657
210,311 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1988
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Thomas FoleyMarlyn Derby
$968K
Raised by the campaign
$13.8K
$663.3K
Spent by the campaign
$13.5K
$587.4K
Cash on hand
$297
Campaign money: FEC, through Dec 31, 1988.
Source: FEC campaign filingsUpdated Dec 31, 1988