| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| WA-01 | DEM | 332,743 | 59.3% | D+18.5 | |
| WA-02 | Rick LarsenDEM | DEM | 294,833 | 71.3% | D+71.3 |
| WA-03 | REP | 307,226 | 52.7% | R+5.3 | |
| WA-04 | REP | 225,336 | 62.8% | R+25.6 | |
| WA-05 | REP | 320,347 | 54.8% | R+9.5 | |
| WA-06 | DEM | 323,086 | 63.9% | D+27.8 | |
| WA-07 | DEM | 394,681 | 83.6% | D+67.1 | |
| WA-08 | Kim SchrierDEM | DEM | 313,057 | 52.4% | D+4.8 |
| WA-09 | Adam SmithDEM | DEM | 240,567 | 67.9% | D+100.0 |
| WA-10 | Denny HeckDEM | DEM | 270,075 | 61.5% | D+23.1 |