| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | Jay InsleeDEM | DEM | 241,937 | 67.7% | D+35.4 |
| WA-02 | Rick LarsenDEM | DEM | 244,794 | 64.2% | D+28.3 |
| WA-03 | Brian BairdDEM | DEM | 232,980 | 63.1% | D+26.3 |
| WA-04 | Doc HastingsREP | REP | 192,300 | 59.9% | R+19.9 |
| WA-05 | REP | 239,324 | 56.4% | R+12.8 | |
| WA-06 | DEM | 224,085 | 70.6% | D+41.2 | |
| WA-07 | DEM | 246,133 | 79.4% | D+63.7 | |
| WA-08 | REP | 251,383 | 51.5% | R+2.9 | |
| WA-09 | Adam SmithDEM | DEM | 181,120 | 65.7% | D+31.4 |