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 County results Proxmire: 50–60% 60–70% 70–80% | |||||||||||||||||
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The1958 United States Senate election in Wisconsin was held on November 4, 1958. IncumbentDemocratWilliam Proxmire, who had won a special election to finish the term of the late SenatorJoe McCarthy, was re-elected to a full term in office over Wisconsin Supreme Court JusticeRoland J. Steinle, a Republican.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | William Proxmire (incumbent) | 682,440 | 57.13% |  0.69 | |
| Republican | Roland J. Steinle | 510,398 | 42.73% | 2.22 | |
| Socialist Workers | James E. Boulton | 1,226 | 0.10% | N/A | |
| Socialist Labor | Georgia Cozzini | 537 | 0.05% |  0.04 | |
| Total votes | 1,194,601 | 100.00% | |||
| Democratichold | Swing | ||||
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