The 1988 United States Senate election in Arizona took place on November 8, 1988. Incumbent Democratic U.S. Senator
Dennis DeConcini was reelected to a third term. This would be the last victory by a Democrat in a Senate race in
Arizona until
Kyrsten Sinema's victory in the
2018 election to this same seat. Even as Incumbent Republican Vice President
George H. W Bush won the state for president on the same ballot.