Adams |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 1797 |
| James A. Andersen | R | 1686 |
Asotin |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 2807 |
| James A. Andersen | R | 1895 |
Benton |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 13979 |
| James A. Andersen | R | 9891 |
Chelan |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 8770 |
| James A. Andersen | R | 7859 |
Clallam |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 6842 |
| James A. Andersen | R | 4521 |
Clark |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 21198 |
| James A. Andersen | R | 14262 |
Columbia |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 1099 |
| John J. O'Connell | D | 787 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 13841 |
| James A. Andersen | R | 8532 |
Douglas |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 3268 |
| James A. Andersen | R | 2035 |
Ferry |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 876 |
| James A. Andersen | R | 467 |
Franklin |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 4935 |
| James A. Andersen | R | 2608 |
Garfield |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 761 |
| John J. O'Connell | D | 655 |
Grant |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 7792 |
| James A. Andersen | R | 4563 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 14516 |
| James A. Andersen | R | 7782 |
Island |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 2444 |
| John J. O'Connell | D | 2258 |
Jefferson |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 2049 |
| James A. Andersen | R | 1649 |
King |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 177587 |
| James A. Andersen | R | 157802 |
Kitsap |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 22482 |
| James A. Andersen | R | 12778 |
Kittitas |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 4316 |
| James A. Andersen | R | 3579 |
Klickitat |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 2469 |
| James A. Andersen | R | 2106 |
Lewis |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 9033 |
| James A. Andersen | R | 8654 |
Lincoln |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 2465 |
| James A. Andersen | R | 2330 |
Mason |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 4436 |
| James A. Andersen | R | 2808 |
Okanogan |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 5874 |
| James A. Andersen | R | 3821 |
Pacific |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 4148 |
| James A. Andersen | R | 2674 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 1610 |
| James A. Andersen | R | 1098 |
Pierce |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 74922 |
| James A. Andersen | R | 32358 |
San Juan |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 904 |
| John J. O'Connell | D | 598 |
Skagit |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 10484 |
| James A. Andersen | R | 9264 |
Skamania |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 1214 |
| James A. Andersen | R | 766 |
Snohomish |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 34989 |
| James A. Andersen | R | 22085 |
Spokane |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 55743 |
| James A. Andersen | R | 45911 |
Stevens |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 4013 |
| James A. Andersen | R | 3246 |
Thurston |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 12521 |
| James A. Andersen | R | 10056 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 949 |
| James A. Andersen | R | 616 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 9132 |
| John J. O'Connell | D | 7199 |
Whatcom |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 15879 |
| James A. Andersen | R | 13293 |
Whitman |
| Candidate | Party | Votes |
|---|
| James A. Andersen | R | 6511 |
| John J. O'Connell | D | 5392 |
Yakima |
| Candidate | Party | Votes |
|---|
| John J. O'Connell | D | 24227 |
| James A. Andersen | R | 24068 |