1988 United States Senate election in Wisconsin

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.

Candidates

 * Tony Earl, former Governor of Wisconsin
 * Ed Garvey, former executive director of the National Football League Players Association and nominee for Senate in 1986
 * Edmond C. Hou-Seye
 * Herb Kohl, businessman & former chairman of the Democratic Party of Wisconsin
 * Doug La Follette, Secretary of State of Wisconsin

Results
[[File:1988 US Senate election in Wisconsin Democratic primary.svg|thumb|200px|Primary results by county: {{legend|#8db8e2|Kohl}}

{{legend|#b4d0ec|40–50%}}

{{legend|#8db8e2|50–60%}}

{{legend|#679fd7|60–70%}} {{legend|#87be51|Earl}}

{{legend|#b1d68d|40–50%}}

{{legend|#87be51|50–60%}}

{{legend|#63a61f|60–70%}} ]]

Candidates

 * Susan Engeleiter, State Senator from Brookfield
 * Steve King, chair of the Republican Party of Wisconsin
 * Peter Y. Taylor