The 1938 United States Senate election in Washington was held on November 8, 1938. Incumbent Democratic U.S. Senator Homer Bone was re-elected to a second term in office over Republican Ewing D. Colvin.
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Results by county | |||||||||||||||||
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The blanket primary was held on September 13, 1938.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Homer Bone (incumbent) | 243,682 | 55.31% | |
| Republican | Ewing D. Colvin | 101,364 | 23.01% | |
| Democratic | Otto A. Case | 59,264 | 13.45% | |
| Republican | Frank M. Goodwin | 20,691 | 4.70% | |
| Republican | Howard E. Foster | 15,557 | 3.53% | |
| Total votes | 440,558 | 100.00% | ||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Homer Bone (incumbent) | 371,535 | 62.62% | |
| Republican | Ewing D. Colvin | 220,204 | 37.12% | |
| Socialist Labor | Eugene V. Solie | 1,553 | 0.26% | |
| Total votes | 593,292 | 100.00% | ||
| Democratic hold | ||||
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