The 1992 United States Senate election in New Hampshire took place on November 3, 1992. Incumbent Republican Senator Warren Rudman declined to seek re-election. Governor Judd Gregg won the Republican primary to succeed him, and faced businessman John Rauh, the Democratic nominee, in the general election. Gregg narrowly defeated Rauh, winning 48 percent of the vote to Rauh's 45 percent, his narrowest victory in any statewide race.