| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | DEM | 225,579 | 55.0% | D+10.1 | |
| WA-02 | Rick LarsenDEM | DEM | 201,691 | 60.6% | D+21.1 |
| WA-03 | REP | 202,814 | 61.5% | R+23.1 | |
| WA-04 | REP | 153,079 | 50.8% | R+100.0 | |
| WA-05 | REP | 223,242 | 60.7% | R+21.4 | |
| WA-06 | DEM | 224,290 | 63.0% | D+26.0 | |
| WA-07 | DEM | 251,875 | 81.0% | D+62.0 | |
| WA-08 | REP | 198,744 | 63.3% | R+26.5 | |
| WA-09 | Adam SmithDEM | DEM | 166,794 | 70.8% | D+41.6 |
| WA-10 | Denny HeckDEM | DEM | 181,492 | 54.7% | D+9.4 |