Adams |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 2856 |
| Mike Lowry | D | 1606 |
Asotin |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 3373 |
| Slade Gorton | R | 3195 |
Benton |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 35986 |
| Mike Lowry | D | 8547 |
Chelan |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 12083 |
| Mike Lowry | D | 7711 |
Clallam |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 11738 |
| Mike Lowry | D | 11235 |
Clark |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 40518 |
| Mike Lowry | D | 37435 |
Columbia |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 1170 |
| Mike Lowry | D | 784 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 14955 |
| Slade Gorton | R | 13502 |
Douglas |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 5718 |
| Mike Lowry | D | 3689 |
Ferry |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 1004 |
| Slade Gorton | R | 981 |
Franklin |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 7683 |
| Mike Lowry | D | 3225 |
Garfield |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 719 |
| Mike Lowry | D | 602 |
Grant |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 10897 |
| Mike Lowry | D | 7265 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 14409 |
| Slade Gorton | R | 9780 |
Island |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 12806 |
| Mike Lowry | D | 8675 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 5388 |
| Slade Gorton | R | 4298 |
King |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 339402 |
| Slade Gorton | R | 289087 |
Kitsap |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 36125 |
| Mike Lowry | D | 30493 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 5542 |
| Mike Lowry | D | 5041 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 3064 |
| Mike Lowry | D | 2983 |
Lewis |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 14254 |
| Mike Lowry | D | 9287 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 2805 |
| Mike Lowry | D | 1932 |
Mason |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 8078 |
| Slade Gorton | R | 7692 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 6189 |
| Mike Lowry | D | 5711 |
Pacific |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 4887 |
| Slade Gorton | R | 3325 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 1870 |
| Mike Lowry | D | 1855 |
Pierce |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 96122 |
| Mike Lowry | D | 93310 |
San Juan |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 2932 |
| Slade Gorton | R | 2811 |
Skagit |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 16747 |
| Mike Lowry | D | 15416 |
Skamania |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 1775 |
| Slade Gorton | R | 1299 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 88307 |
| Mike Lowry | D | 80413 |
Spokane |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 73583 |
| Mike Lowry | D | 68482 |
Stevens |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 6729 |
| Mike Lowry | D | 5389 |
Thurston |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 34266 |
| Slade Gorton | R | 33371 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| Mike Lowry | D | 804 |
| Slade Gorton | R | 716 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 10647 |
| Mike Lowry | D | 7004 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 25278 |
| Mike Lowry | D | 24779 |
Whitman |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 8022 |
| Mike Lowry | D | 7256 |
Yakima |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 36844 |
| Mike Lowry | D | 22785 |