Adams |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 1874 |
| Mike McCormack | D | 1564 |
Asotin |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 2561 |
| Catherine May | R | 2008 |
Benton |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 12769 |
| Catherine May | R | 12421 |
Columbia |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 1228 |
| Mike McCormack | D | 679 |
Franklin |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 4678 |
| Catherine May | R | 3343 |
Garfield |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 665 |
| Mike McCormack | D | 615 |
Grant |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 6191 |
| Catherine May | R | 5576 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 4714 |
| Catherine May | R | 2909 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 925 |
| Mike McCormack | D | 831 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 7128 |
| Mike McCormack | D | 6006 |
Whitman |
| Candidate | Party | Votes |
|---|
| Catherine May | R | 6488 |
| Mike McCormack | D | 4929 |
Yakima |
| Candidate | Party | Votes |
|---|
| Mike McCormack | D | 24582 |
| Catherine May | R | 18679 |