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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.