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 County results Kohl: 50–60% 60–70% 70–80% Engeleiter: 40–50% 50–60% 60–70% | |||||||||||||||||
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| Elections in Wisconsin |
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The 1988 United States Senate election in Wisconsin took place on November 8, 1988. Incumbent Democratic U.S. Senator William Proxmire decided to retire, instead of running for re-election to a sixth full term. Democrat Herb Kohl won the open seat.