Adams |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 2169 |
| John G. McCutcheon | D | 1573 |
Asotin |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 2721 |
| Slade Gorton | R | 2071 |
Benton |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 13637 |
| John G. McCutcheon | D | 12970 |
Chelan |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 8574 |
| John G. McCutcheon | D | 7111 |
Clallam |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 6679 |
| Slade Gorton | R | 6348 |
Clark |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 21776 |
| Slade Gorton | R | 19918 |
Columbia |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 1169 |
| John G. McCutcheon | D | 818 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 12468 |
| Slade Gorton | R | 10470 |
Douglas |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 3133 |
| John G. McCutcheon | D | 3069 |
Ferry |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 706 |
| Slade Gorton | R | 508 |
Franklin |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 5020 |
| Slade Gorton | R | 3769 |
Garfield |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 763 |
| John G. McCutcheon | D | 688 |
Grant |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 6842 |
| John G. McCutcheon | D | 6224 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 13446 |
| Slade Gorton | R | 7196 |
Island |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 4065 |
| John G. McCutcheon | D | 3319 |
Jefferson |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 2296 |
| Slade Gorton | R | 1746 |
King |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 235887 |
| John G. McCutcheon | D | 195982 |
Kitsap |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 21809 |
| Slade Gorton | R | 15723 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 4080 |
| John G. McCutcheon | D | 3811 |
Klickitat |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 2271 |
| Slade Gorton | R | 2083 |
Lewis |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 9834 |
| Slade Gorton | R | 7565 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 2579 |
| John G. McCutcheon | D | 1946 |
Mason |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 4578 |
| Slade Gorton | R | 3545 |
Okanogan |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 4816 |
| Slade Gorton | R | 4002 |
Pacific |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 3604 |
| Slade Gorton | R | 2236 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 1399 |
| Slade Gorton | R | 1082 |
Pierce |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 74064 |
| Slade Gorton | R | 53866 |
San Juan |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 1117 |
| John G. McCutcheon | D | 673 |
Skagit |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 10677 |
| Slade Gorton | R | 10449 |
Skamania |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 1132 |
| Slade Gorton | R | 876 |
Snohomish |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 42887 |
| Slade Gorton | R | 37591 |
Spokane |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 52433 |
| John G. McCutcheon | D | 51196 |
Stevens |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 3442 |
| Slade Gorton | R | 3118 |
Thurston |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 14382 |
| Slade Gorton | R | 14311 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| John G. McCutcheon | D | 790 |
| Slade Gorton | R | 686 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 8859 |
| John G. McCutcheon | D | 6397 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 14763 |
| John G. McCutcheon | D | 13220 |
Whitman |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 7874 |
| John G. McCutcheon | D | 4468 |
Yakima |
| Candidate | Party | Votes |
|---|
| Slade Gorton | R | 24491 |
| John G. McCutcheon | D | 21964 |