The 1938 United States Senate election in Missouri took place on November 8, 1938 in Missouri. The incumbent Democratic Senator, Bennett Champ Clark, was re-elected with 60.69% of the vote. He defeated Republican candidate and former Governor of Missouri Henry S. Caulfield.
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 County results Clark: 50–60% 60–70% 70–80% 80–90% Caulfield: 50–60% 60–70% 70–80% | |||||||||||||||||
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Democratic primary
Candidates
- Bennett Champ Clark, incumbent Senator since 1933
- Joseph T. Davis, lawyer[1]
- Willis H. Meredith, former State Representative for Butler County and Speaker of the Missouri House of Representatives[2][3]
- Robert I. Young, farmer[4]
Results
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Bennett Champ Clark (incumbent) | 574,526 | 78.81 | |
| Democratic | Joseph T. Davis | 92,946 | 12.75 | |
| Democratic | Willis H. Meredith | 35,543 | 4.88 | |
| Democratic | Robert I. Young | 26,029 | 3.57 | |
| Total votes | 729,044 | 100 | ||
Republican primary
Candidates
- Henry S. Caulfield, former Governor of Missouri
- Ray E. White, real estate dealer[4]
Results
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Henry S. Caulfield | 168,312 | 85.97 | |
| Republican | Ray E. White | 27,470 | 14.03 | |
| Total votes | 195,782 | 100 | ||
General election
Candidates
- Henry S. Caulfield, former Governor of Missouri (Republican)
- Bennett Champ Clark, incumbent Senator since 1933 (Democratic)
- J. G. Hodges, nominee for U.S. Senate in 1932 (Socialist)
- Karl L. Oberhue (Socialist Labor)
Results
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Bennett Champ Clark (incumbent) | 757,587 | 60.69% | -2.57 | |
| Republican | Henry S. Caulfield | 488,687 | 39.15% | +3.38 | |
| Socialist | J. G. Hodges | 1,712 | 0.14% | -0.57 | |
| Socialist Labor | Karl L. Oberhue | 292 | 0.02% | -0.01 | |
| Majority | 268,900 | 21.54% | |||
| Turnout | 1,248,278 | ||||
| Democratic hold | Swing | ||||