Adams |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 2165 |
| Warren G. Magnuson | D | 1398 |
| Henry Killman | SL | 1 |
| W. Frank Horne | CON | 0 |
Asotin |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 2242 |
| Richard G. Christensen | R | 2157 |
| W. Frank Horne | CON | 4 |
| Henry Killman | SL | 0 |
Benton |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 10989 |
| Warren G. Magnuson | D | 10635 |
| Henry Killman | SL | 8 |
| W. Frank Horne | CON | 3 |
Chelan |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 7587 |
| Warren G. Magnuson | D | 5915 |
| Henry Killman | SL | 90 |
| W. Frank Horne | CON | 40 |
Clallam |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 5315 |
| Richard G. Christensen | R | 4632 |
| Henry Killman | SL | 20 |
| W. Frank Horne | CON | 6 |
Clark |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 17181 |
| Richard G. Christensen | R | 10157 |
| Henry Killman | SL | 89 |
| W. Frank Horne | CON | 26 |
Columbia |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 1136 |
| Warren G. Magnuson | D | 690 |
| Henry Killman | SL | 0 |
| W. Frank Horne | CON | 0 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 8781 |
| Richard G. Christensen | R | 6633 |
| Henry Killman | SL | 48 |
| W. Frank Horne | CON | 39 |
Douglas |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 2730 |
| Warren G. Magnuson | D | 2277 |
| W. Frank Horne | CON | 7 |
| Henry Killman | SL | 4 |
Ferry |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 617 |
| Warren G. Magnuson | D | 606 |
| Henry Killman | SL | 2 |
| W. Frank Horne | CON | 2 |
Franklin |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 3928 |
| Richard G. Christensen | R | 3227 |
| Henry Killman | SL | 22 |
| W. Frank Horne | CON | 7 |
Garfield |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 817 |
| Warren G. Magnuson | D | 446 |
| W. Frank Horne | CON | 2 |
| Henry Killman | SL | 0 |
Grant |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 6008 |
| Warren G. Magnuson | D | 5015 |
| Henry Killman | SL | 5 |
| W. Frank Horne | CON | 4 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 9879 |
| Richard G. Christensen | R | 7210 |
| Henry Killman | SL | 78 |
| W. Frank Horne | CON | 11 |
Island |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 2587 |
| Warren G. Magnuson | D | 2410 |
| Henry Killman | SL | 7 |
| W. Frank Horne | CON | 2 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 2004 |
| Richard G. Christensen | R | 1589 |
| Henry Killman | SL | 9 |
| W. Frank Horne | CON | 0 |
King |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 181806 |
| Richard G. Christensen | R | 144910 |
| Henry Killman | SL | 2522 |
| W. Frank Horne | CON | 373 |
Kitsap |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 19241 |
| Richard G. Christensen | R | 10709 |
| Henry Killman | SL | 73 |
| W. Frank Horne | CON | 20 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 3633 |
| Warren G. Magnuson | D | 3432 |
| Henry Killman | SL | 3 |
| W. Frank Horne | CON | 3 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 2457 |
| Richard G. Christensen | R | 2116 |
| Henry Killman | SL | 4 |
| W. Frank Horne | CON | 0 |
Lewis |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 8596 |
| Warren G. Magnuson | D | 7111 |
| Henry Killman | SL | 16 |
| W. Frank Horne | CON | 2 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 2914 |
| Warren G. Magnuson | D | 1582 |
| Henry Killman | SL | 2 |
| W. Frank Horne | CON | 2 |
Mason |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 3676 |
| Richard G. Christensen | R | 2853 |
| Henry Killman | SL | 3 |
| W. Frank Horne | CON | 0 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 4453 |
| Warren G. Magnuson | D | 4366 |
| Henry Killman | SL | 4 |
| W. Frank Horne | CON | 1 |
Pacific |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 3307 |
| Richard G. Christensen | R | 2230 |
| W. Frank Horne | CON | 3 |
| Henry Killman | SL | 1 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 1251 |
| Richard G. Christensen | R | 1249 |
| Henry Killman | SL | 0 |
| W. Frank Horne | CON | 0 |
Pierce |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 52609 |
| Richard G. Christensen | R | 40175 |
| Henry Killman | SL | 842 |
| W. Frank Horne | CON | 195 |
San Juan |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 841 |
| Warren G. Magnuson | D | 612 |
| Henry Killman | SL | 5 |
| W. Frank Horne | CON | 2 |
Skagit |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 9169 |
| Warren G. Magnuson | D | 9158 |
| Henry Killman | SL | 18 |
| W. Frank Horne | CON | 9 |
Skamania |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 1173 |
| Richard G. Christensen | R | 684 |
| Henry Killman | SL | 1 |
| W. Frank Horne | CON | 1 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 31965 |
| Richard G. Christensen | R | 25622 |
| Henry Killman | SL | 356 |
| W. Frank Horne | CON | 41 |
Spokane |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 51406 |
| Warren G. Magnuson | D | 35973 |
| Henry Killman | SL | 72 |
| W. Frank Horne | CON | 65 |
Stevens |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 3851 |
| Warren G. Magnuson | D | 2669 |
| Henry Killman | SL | 11 |
| W. Frank Horne | CON | 6 |
Thurston |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 11369 |
| Richard G. Christensen | R | 10475 |
| Henry Killman | SL | 15 |
| W. Frank Horne | CON | 3 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| Warren G. Magnuson | D | 793 |
| Richard G. Christensen | R | 551 |
| Henry Killman | SL | 1 |
| W. Frank Horne | CON | 1 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 7842 |
| Warren G. Magnuson | D | 6046 |
| Henry Killman | SL | 16 |
| W. Frank Horne | CON | 4 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 12680 |
| Warren G. Magnuson | D | 11661 |
| Henry Killman | SL | 184 |
| W. Frank Horne | CON | 17 |
Whitman |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 6413 |
| Warren G. Magnuson | D | 3933 |
| Henry Killman | SL | 3 |
| W. Frank Horne | CON | 3 |
Yakima |
| Candidate | Party | Votes |
|---|
| Richard G. Christensen | R | 22591 |
| Warren G. Magnuson | D | 16453 |
| Henry Killman | SL | 195 |
| W. Frank Horne | CON | 26 |