Adams |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1033 |
| John Pattison | D | 750 |
| A.S. Caton | PR | 30 |
| Geo. E. Boomer | S | 0 |
Asotin |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 693 |
| John Pattison | D | 338 |
| A.S. Caton | PR | 22 |
| Geo. E. Boomer | S | 12 |
Benton |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 913 |
| John Pattison | D | 479 |
| Geo. E. Boomer | S | 94 |
| A.S. Caton | PR | 22 |
Chelan |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1776 |
| John Pattison | D | 851 |
| A.S. Caton | PR | 41 |
| Geo. E. Boomer | S | 0 |
Clallam |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 987 |
| John Pattison | D | 459 |
| A.S. Caton | PR | 12 |
| Geo. E. Boomer | S | 0 |
Clark |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 3422 |
| Samuel G. Cosgrove | R | 2555 |
| John Pattison | D | 1186 |
| John Pattison | D | 1136 |
| Geo. E. Boomer | S | 266 |
| Geo. E. Boomer | S | 169 |
| A.S. Caton | PR | 71 |
| A.S. Caton | PR | 47 |
Columbia |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 872 |
| John Pattison | D | 632 |
| A.S. Caton | PR | 28 |
| Geo. E. Boomer | S | 0 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1619 |
| John Pattison | D | 623 |
| Geo. E. Boomer | S | 37 |
| A.S. Caton | PR | 29 |
Douglas |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 2017 |
| John Pattison | D | 1559 |
| A.S. Caton | PR | 23 |
| Geo. E. Boomer | S | 0 |
Ferry |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 512 |
| John Pattison | D | 402 |
| A.S. Caton | PR | 4 |
| Geo. E. Boomer | S | 0 |
Franklin |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 688 |
| John Pattison | D | 470 |
| A.S. Caton | PR | 17 |
| Geo. E. Boomer | S | 7 |
Garfield |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 601 |
| John Pattison | D | 354 |
| Geo. E. Boomer | S | 17 |
| A.S. Caton | PR | 10 |
Island |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 505 |
| John Pattison | D | 157 |
| Geo. E. Boomer | S | 67 |
| A.S. Caton | PR | 15 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 885 |
| John Pattison | D | 392 |
| Geo. E. Boomer | S | 19 |
| A.S. Caton | PR | 8 |
King |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 23632 |
| John Pattison | D | 13939 |
| A.S. Caton | PR | 574 |
| Geo. E. Boomer | S | 0 |
Kitsap |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1987 |
| John Pattison | D | 751 |
| Geo. E. Boomer | S | 297 |
| A.S. Caton | PR | 54 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1772 |
| John Pattison | D | 1002 |
| A.S. Caton | PR | 51 |
| Geo. E. Boomer | S | 0 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1328 |
| John Pattison | D | 549 |
| A.S. Caton | PR | 36 |
| Geo. E. Boomer | S | 0 |
Lewis |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 3214 |
| John Pattison | D | 1472 |
| Geo. E. Boomer | S | 298 |
| A.S. Caton | PR | 70 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 2107 |
| John Pattison | D | 1453 |
| A.S. Caton | PR | 34 |
| Geo. E. Boomer | S | 21 |
Mason |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 587 |
| John Pattison | D | 322 |
| A.S. Caton | PR | 13 |
| Geo. E. Boomer | S | 0 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1530 |
| John Pattison | D | 1028 |
| Geo. E. Boomer | S | 68 |
| A.S. Caton | PR | 13 |
Pacific |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 1470 |
| John Pattison | D | 537 |
| Geo. E. Boomer | S | 80 |
| A.S. Caton | PR | 9 |
Pierce |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 11586 |
| John Pattison | D | 4701 |
| Geo. E. Boomer | S | 649 |
| A.S. Caton | PR | 331 |
San Juan |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 621 |
| John Pattison | D | 143 |
| Geo. E. Boomer | S | 72 |
| A.S. Caton | PR | 2 |
Skagit |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 3110 |
| John Pattison | D | 1367 |
| Geo. E. Boomer | S | 321 |
| A.S. Caton | PR | 64 |
Skamania |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 350 |
| John Pattison | D | 119 |
| A.S. Caton | PR | 7 |
| Geo. E. Boomer | S | 0 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 5913 |
| John Pattison | D | 2700 |
| A.S. Caton | PR | 595 |
| Geo. E. Boomer | S | 573 |
Spokane |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 11700 |
| John Pattison | D | 6869 |
| Geo. E. Boomer | S | 597 |
| A.S. Caton | PR | 393 |
Stevens |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 2613 |
| John Pattison | D | 1554 |
| Geo. E. Boomer | S | 292 |
| A.S. Caton | PR | 87 |
Thurston |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 2001 |
| John Pattison | D | 985 |
| A.S. Caton | PR | 130 |
| Geo. E. Boomer | S | 0 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 495 |
| John Pattison | D | 132 |
| Geo. E. Boomer | S | 0 |
| A.S. Caton | PR | 0 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 2670 |
| John Pattison | D | 1881 |
| A.S. Caton | PR | 34 |
| Geo. E. Boomer | S | 30 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 5341 |
| John Pattison | D | 2273 |
| A.S. Caton | PR | 208 |
| Geo. E. Boomer | S | 164 |
Whitman |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 3053 |
| John Pattison | D | 2946 |
| A.S. Caton | PR | 189 |
| Geo. E. Boomer | S | 0 |
Yakima |
| Candidate | Party | Votes |
|---|
| Samuel G. Cosgrove | R | 4032 |
| John Pattison | D | 1615 |
| A.S. Caton | PR | 241 |
| Geo. E. Boomer | S | 161 |