The 1986 United States Senate election in Arizona was held on November 4, 1986. Incumbent Republican U.S. Senator Barry Goldwater decided to retire instead of seeking a sixth term. Republican nominee John McCain won the open seat.
Kimball's campaign was subject to negative press from the Arizona Republic and Phoenix Gazette, both owned by McCain benefactor Darrow Tully. One Gazette columnist described him as displaying "terminal weirdness."  McCain ultimately won the election by a margin of twenty percent, and is now Arizona's senior Senator.