| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | Jay InsleeDEM | DEM | 226,473 | 49.8% | D+5.7 |
| WA-02 | Jack MetcalfREP | REP | 224,901 | 55.2% | R+10.4 |
| WA-03 | Brian BairdDEM | DEM | 220,219 | 54.7% | D+9.3 |
| WA-04 | Doc HastingsREP | REP | 176,090 | 69.1% | R+44.7 |
| WA-05 | REP | 193,258 | 56.9% | R+18.9 | |
| WA-06 | DEM | 209,599 | 68.4% | D+36.7 | |
| WA-07 | DEM | 207,542 | 88.2% | D+88.2 | |
| WA-08 | REP | 226,910 | 59.7% | R+19.5 | |
| WA-09 | Adam SmithDEM | DEM | 173,056 | 64.7% | D+29.4 |