Clallam |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 6382 |
| Payson Peterson | R | 2837 |
| Elmer D. Needham | P | 200 |
Island |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 2200 |
| Payson Peterson | R | 1254 |
| Elmer D. Needham | P | 43 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 2111 |
| Payson Peterson | R | 1264 |
| Elmer D. Needham | P | 41 |
King |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 16333 |
| Payson Peterson | R | 12669 |
| Elmer D. Needham | P | 587 |
San Juan |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 845 |
| Payson Peterson | R | 624 |
| Elmer D. Needham | P | 20 |
Skagit |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 10600 |
| Payson Peterson | R | 6485 |
| Elmer D. Needham | P | 437 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 29894 |
| Payson Peterson | R | 12973 |
| Elmer D. Needham | P | 1423 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Henry M. Jackson | D | 15459 |
| Payson Peterson | R | 10307 |
| Elmer D. Needham | P | 1002 |