Adams |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 2102 |
| Robert (Bob) Coplen | R | 1699 |
Asotin |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 3283 |
| Robert (Bob) Coplen | R | 1938 |
Benton |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 14568 |
| Robert (Bob) Coplen | R | 9908 |
Chelan |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 9323 |
| Robert (Bob) Coplen | R | 7021 |
Clallam |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 7711 |
| Robert (Bob) Coplen | R | 4327 |
Clark |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 22319 |
| Robert (Bob) Coplen | R | 13809 |
Columbia |
| Candidate | Party | Votes |
|---|
| Robert (Bob) Coplen | R | 1017 |
| Tom Martin | D | 899 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 14835 |
| Robert (Bob) Coplen | R | 6701 |
Douglas |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 3675 |
| Robert (Bob) Coplen | R | 2146 |
Ferry |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 963 |
| Robert (Bob) Coplen | R | 404 |
Franklin |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 5362 |
| Robert (Bob) Coplen | R | 2965 |
Garfield |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 701 |
| Robert (Bob) Coplen | R | 662 |
Grant |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 9101 |
| Robert (Bob) Coplen | R | 4679 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 15165 |
| Robert (Bob) Coplen | R | 5969 |
Island |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 2940 |
| Robert (Bob) Coplen | R | 2481 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 2472 |
| Robert (Bob) Coplen | R | 1399 |
King |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 224277 |
| Robert (Bob) Coplen | R | 143878 |
Kitsap |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 23580 |
| Robert (Bob) Coplen | R | 10586 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 5366 |
| Robert (Bob) Coplen | R | 2646 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 2930 |
| Robert (Bob) Coplen | R | 1848 |
Lewis |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 11867 |
| Robert (Bob) Coplen | R | 5933 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 2713 |
| Robert (Bob) Coplen | R | 2201 |
Mason |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 5129 |
| Robert (Bob) Coplen | R | 2144 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 5984 |
| Robert (Bob) Coplen | R | 3618 |
Pacific |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 4331 |
| Robert (Bob) Coplen | R | 1935 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 1734 |
| Robert (Bob) Coplen | R | 918 |
Pierce |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 71992 |
| Robert (Bob) Coplen | R | 37973 |
San Juan |
| Candidate | Party | Votes |
|---|
| Robert (Bob) Coplen | R | 812 |
| Tom Martin | D | 737 |
Skagit |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 13273 |
| Robert (Bob) Coplen | R | 8300 |
Skamania |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 1363 |
| Robert (Bob) Coplen | R | 710 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 42117 |
| Robert (Bob) Coplen | R | 23382 |
Spokane |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 60751 |
| Robert (Bob) Coplen | R | 43541 |
Stevens |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 4279 |
| Robert (Bob) Coplen | R | 2847 |
Thurston |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 18969 |
| Robert (Bob) Coplen | R | 5595 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 1061 |
| Robert (Bob) Coplen | R | 481 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Robert (Bob) Coplen | R | 8962 |
| Tom Martin | D | 7963 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 15685 |
| Robert (Bob) Coplen | R | 11900 |
Whitman |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 6396 |
| Robert (Bob) Coplen | R | 5583 |
Yakima |
| Candidate | Party | Votes |
|---|
| Tom Martin | D | 29235 |
| Robert (Bob) Coplen | R | 19501 |