| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | DEM | 328,212 | 53.9% | D+7.9 | |
| WA-02 | Rick LarsenDEM | DEM | 302,291 | 61.1% | D+22.3 |
| WA-03 | REP | 293,884 | 60.4% | R+20.8 | |
| WA-04 | Doc HastingsREP | REP | 233,689 | 66.2% | R+32.4 |
| WA-05 | REP | 308,578 | 61.9% | R+23.8 | |
| WA-06 | DEM | 316,386 | 59.0% | D+18.0 | |
| WA-07 | DEM | 374,580 | 79.7% | D+59.3 | |
| WA-08 | REP | 302,090 | 59.6% | R+19.3 | |
| WA-09 | Adam SmithDEM | DEM | 268,139 | 71.6% | D+43.2 |
| WA-10 | Denny HeckDEM | DEM | 278,417 | 58.6% | D+17.1 |