Adams |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 2422 |
| Deborah Senn | D | 1553 |
| Brian McCulloch | IC | 309 |
Asotin |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 3573 |
| Richard G. (Dick) Marquardt | R | 2674 |
| Brian McCulloch | IC | 640 |
Benton |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 29342 |
| Deborah Senn | D | 16943 |
| Brian McCulloch | IC | 2917 |
Chelan |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 11535 |
| Deborah Senn | D | 7878 |
| Brian McCulloch | IC | 1244 |
Clallam |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 11847 |
| Deborah Senn | D | 11827 |
| Brian McCulloch | IC | 2492 |
Clark |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 48096 |
| Richard G. (Dick) Marquardt | R | 39035 |
| Brian McCulloch | IC | 9590 |
Columbia |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 983 |
| Deborah Senn | D | 707 |
| Brian McCulloch | IC | 96 |
Cowlitz |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 14757 |
| Richard G. (Dick) Marquardt | R | 13073 |
| Brian McCulloch | IC | 3106 |
Douglas |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 5293 |
| Deborah Senn | D | 3980 |
| Brian McCulloch | IC | 782 |
Ferry |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 1132 |
| Richard G. (Dick) Marquardt | R | 884 |
| Brian McCulloch | IC | 244 |
Franklin |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 6686 |
| Deborah Senn | D | 4115 |
| Brian McCulloch | IC | 584 |
Garfield |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 683 |
| Deborah Senn | D | 448 |
| Brian McCulloch | IC | 59 |
Grant |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 10183 |
| Deborah Senn | D | 8318 |
| Brian McCulloch | IC | 1613 |
Grays Harbor |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 14036 |
| Richard G. (Dick) Marquardt | R | 9110 |
| Brian McCulloch | IC | 1778 |
Island |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 11684 |
| Richard G. (Dick) Marquardt | R | 11584 |
| Brian McCulloch | IC | 1868 |
Jefferson |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 6375 |
| Richard G. (Dick) Marquardt | R | 4524 |
| Brian McCulloch | IC | 955 |
King |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 386809 |
| Richard G. (Dick) Marquardt | R | 270088 |
| Brian McCulloch | IC | 40918 |
Kitsap |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 40284 |
| Richard G. (Dick) Marquardt | R | 34591 |
| Brian McCulloch | IC | 6608 |
Kittitas |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 5699 |
| Richard G. (Dick) Marquardt | R | 4702 |
| Brian McCulloch | IC | 899 |
Klickitat |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 2928 |
| Richard G. (Dick) Marquardt | R | 2357 |
| Brian McCulloch | IC | 635 |
Lewis |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 12694 |
| Deborah Senn | D | 10053 |
| Brian McCulloch | IC | 2047 |
Lincoln |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 2614 |
| Deborah Senn | D | 1776 |
| Brian McCulloch | IC | 271 |
Mason |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 9584 |
| Richard G. (Dick) Marquardt | R | 7590 |
| Brian McCulloch | IC | 1435 |
Okanogan |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 5678 |
| Richard G. (Dick) Marquardt | R | 4742 |
| Brian McCulloch | IC | 1285 |
Pacific |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 4686 |
| Richard G. (Dick) Marquardt | R | 2961 |
| Brian McCulloch | IC | 699 |
Pend Oreille |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 2103 |
| Richard G. (Dick) Marquardt | R | 1837 |
| Brian McCulloch | IC | 361 |
Pierce |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 112596 |
| Richard G. (Dick) Marquardt | R | 92913 |
| Brian McCulloch | IC | 18855 |
San Juan |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 3226 |
| Richard G. (Dick) Marquardt | R | 2582 |
| Brian McCulloch | IC | 448 |
Skagit |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 18186 |
| Richard G. (Dick) Marquardt | R | 16457 |
| Brian McCulloch | IC | 2924 |
Skamania |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 1667 |
| Richard G. (Dick) Marquardt | R | 1118 |
| Brian McCulloch | IC | 362 |
Snohomish |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 104232 |
| Richard G. (Dick) Marquardt | R | 86489 |
| Brian McCulloch | IC | 15239 |
Spokane |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 76859 |
| Deborah Senn | D | 72400 |
| Brian McCulloch | IC | 9900 |
Stevens |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 6227 |
| Deborah Senn | D | 5836 |
| Brian McCulloch | IC | 1330 |
Thurston |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 40592 |
| Richard G. (Dick) Marquardt | R | 32813 |
| Brian McCulloch | IC | 5513 |
Wahkiakum |
| Candidate | Party | Votes |
|---|
| Deborah Senn | D | 710 |
| Richard G. (Dick) Marquardt | R | 705 |
| Brian McCulloch | IC | 127 |
Walla Walla |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 9109 |
| Deborah Senn | D | 7681 |
| Brian McCulloch | IC | 1172 |
Whatcom |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 27522 |
| Deborah Senn | D | 25415 |
| Brian McCulloch | IC | 4159 |
Whitman |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 7178 |
| Deborah Senn | D | 6909 |
| Brian McCulloch | IC | 1182 |
Yakima |
| Candidate | Party | Votes |
|---|
| Richard G. (Dick) Marquardt | R | 30545 |
| Deborah Senn | D | 24759 |
| Brian McCulloch | IC | 3634 |