Benton |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 9727 |
| Claude L. Oliver | R | 9511 |
| Sid Morrison | R | 4450 |
Chelan |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 3833 |
| Sid Morrison | R | 3765 |
| Claude L. Oliver | R | 2352 |
Clark |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 15243 |
| Sid Morrison | R | 5622 |
| Claude L. Oliver | R | 4813 |
Douglas |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 2259 |
| Sid Morrison | R | 1574 |
| Claude L. Oliver | R | 873 |
Grant |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 4515 |
| Sid Morrison | R | 3351 |
| Claude L. Oliver | R | 2314 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 2782 |
| Mike McCormack | D | 2712 |
| Claude L. Oliver | R | 991 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 1717 |
| Sid Morrison | R | 961 |
| Claude L. Oliver | R | 551 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 923 |
| Sid Morrison | R | 623 |
| Claude L. Oliver | R | 219 |
Skamania |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 1164 |
| Sid Morrison | R | 385 |
| Claude L. Oliver | R | 152 |
Yakima |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 16160 |
| Mike McCormack | D | 6707 |
| Claude L. Oliver | R | 5771 |