1952 United States Senate election in Washington
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 County results Jackson: 50–60% 60–70% Cain: 50–60% 60–70% | |||||||||||||||||
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The United States Senate election in Washington of 1952 was held on November 4, 1952. Incumbent and highly-controversial Republican Harry Cain ran for a second term in office, but was defeated by Democratic U.S. Representative Henry M. Jackson. Jackson would come to serve 30 years as a United States Senator, and this would be his only election to the Senate in which he lost any of the state’s counties.
Blanket primary
Candidates
Democratic
- Henry M. Jackson, U.S. Representative from Everett
Republican
- Harry Cain, incumbent U.S. Senator since 1946
- Carl Viking Holman
- Ed F. Oldfield
Results
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Henry M. Jackson | 326,341 | 48.84% | |
| Republican | Harry Cain (incumbent) | 261,244 | 39.09% | |
| Republican | Carl Viking Holman | 49,411 | 7.39% | |
| Republican | Ed F. Oldfield | 31,243 | 4.68% | |
| Total votes | 668,239 | 100.00% | ||
General election
Results
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Henry M. Jackson | 595,288 | 56.23% |  11.09 | |
| Republican | Harry Cain (incumbent) | 460,884 | 43.53% |  10.81 | |
| Progressive | Thomas C. Rabbitt | 1,912 | 0.18% | N/A | |
| Socialist Labor | Henry M. Killman | 651 | 0.06% | 0.29 | |
| Total votes | 1,058,735 | 100.00% | |||
| Democratic gain from Republican | Swing | ||||
