The 1970 United States Senate election in Wisconsin was held on November 3, 1970. Incumbent Democrat William Proxmire was easily re-elected to a third term in office over Republican John E. Erickson, taking more than 70% of the vote, and defeating Erickson by more than 42 percentage points.
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County results Proxmire: 50–60% 60–70% 70–80% 80–90% | |||||||||||||||||
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Party | Candidate | Votes | % | ±% | |
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Democratic | William Proxmire (incumbent) | 948,445 | 70.83% | 17.54 | |
Republican | John E. Erickson | 381,297 | 28.48% | 18.13 | |
American Independent | Edmond E. Hou-Seye | 6,137 | 0.46% | N/A | |
Independent | Elizabeth Boardman | 2,022 | 0.15% | N/A | |
Socialist Workers | Martha M. Quinn | 580 | 0.04% | 0.01 | |
Socialist Labor | Adolf Wiggert | 428 | 0.03% | N/A | |
None | Scattering | 58 | 0.00% | 0.01 | |
Total votes | 1,338,967 | 100.00% | |||
Democratic hold | Swing |