Benton |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 15104 |
| Mark Epperson | D | 2492 |
| Robert C. (Rob) Dupuy | D | 1997 |
Chelan |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 7119 |
| Mark Epperson | D | 1086 |
| Robert C. (Rob) Dupuy | D | 975 |
Clark |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 151 |
| Mark Epperson | D | 43 |
| Robert C. (Rob) Dupuy | D | 42 |
Douglas |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 3033 |
| Mark Epperson | D | 567 |
| Robert C. (Rob) Dupuy | D | 423 |
Franklin |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 3461 |
| Mark Epperson | D | 824 |
| Robert C. (Rob) Dupuy | D | 819 |
Grant |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 5902 |
| Mark Epperson | D | 1237 |
| Robert C. (Rob) Dupuy | D | 989 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 4495 |
| Mark Epperson | D | 1247 |
| Robert C. (Rob) Dupuy | D | 895 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 2638 |
| Mark Epperson | D | 733 |
| Robert C. (Rob) Dupuy | D | 579 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 3927 |
| Mark Epperson | D | 1180 |
| Robert C. (Rob) Dupuy | D | 819 |
Skamania |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 1115 |
| Robert C. (Rob) Dupuy | D | 525 |
| Mark Epperson | D | 396 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 212 |
| Robert C. (Rob) Dupuy | D | 50 |
| Mark Epperson | D | 47 |
Yakima |
| Candidate | Party | Votes |
|---|
| Sid Morrison | R | 21653 |
| Mark Epperson | D | 3489 |
| Robert C. (Rob) Dupuy | D | 2485 |