| Years | Party | Senator | % Correct |
|---|---|---|---|
| 1993- | Democratic | Patty Murray | 100%
|
| 2001- | Democratic | Maria Cantwell | 92%
|
| 1953-1983 | Democratic | Henry M. Jackson | 67%
|
| 1944-1981 | Democratic | Warren Magnuson | 67%
|
| 1899-1905 | Republican | Addison G. Foster | 58%
|
| 1987-1993 | Democratic | Brock Adams | 58%
|
| 1923-1935 | Democratic | Clarence C. Dill | 58%
|
| 1983-1989 | Republican | Daniel J. Evans | 58%
|
| 1932-1933 | Republican | Elijah S. Grammer | 58%
|
| 1897-1903 | Democratic | George Turner | 58%
|
| 1946-1953 | Republican | Harry P. Cain | 58%
|
| 1933-1944 | Democratic | Homer Bone | 58%
|
| 1895-1899 | Republican | John L. Wilson | 58%
|
| 1903-1909 | Republican | Levi Ankeny | 58%
|
| 1935-1940 | Democratic | Lewis B. Schwellenbach | 58%
|
| 1911-1923 | Republican, Progressive | Miles Poindexter | 58%
|
| 1940-1945 | Democratic | Monrad C. Wallgren | 58%
|
| 1905-1911 | Republican | Samuel H. Piles | 58%
|
| 1981-1987; 1989-2001 | Republican | Slade Gorton | 58%
|
| 1909-1932 | Republican | Wesley L. Jones | 58%
|
| 1945-1946 | Democratic | Hugh B. Mitchell | 50%
|
| 1889-1893 | Republican | John B. Allen | 50%
|
| 1889-1897 | Republican | Watson C. Squire | 50%
|