1964 United States Senate election in Wisconsin

The 1964 United States Senate election in Wisconsin was held on November 3, 1964. Incumbent Democrat William Proxmire was re-elected to a second term in office over Republican Wilbur Renk.

Candidates

 * Kenneth F. Klinkert
 * William Proxmire, incumbent senator since 1957
 * Arlyn F. Wollenburg

Results
After losing the primary, Klinkert entered the general election as a candidate running on a "Faith and Belief in Man" ticket.

Candidates

 * Wilbur N. Renk, candidate for governor in 1962

Candidates

 * Wayne Leverenz (Socialist Workers)
 * Kenneth F. Klinkert (Faith and Belief in Man)
 * William Proxmire, incumbent Senator (Democratic)
 * Wilbur N. Renk, candidate for governor in 1962 (Republican)