The 1980 United States Senate election in Vermont took place on November 4, 1980. Incumbent Democratic U.S. Senator Patrick Leahy narrowly won reelection to a second term, defeating Republican Stewart Ledbetter, the Vermont Commissioner of Banking and Insurance.
The majority of the candidates in the Republican primary field were conservative Republicans, with Ledbetter being seen as the only moderate.
Over the course of the campaign, a dispute broke out between T. Garry Buckley, a former Lieutenant Governor, and James Mullin, the former Vermont GOP Chair. Buckley vigoriously attacked Mullin for being a Mormon, claiming that if elected Mullin would be the "third Senator from Utah."[7] Mullin in turned accused Buckley of bigotry, stating "I thought this nonsense went out when Jack Kennedy was elected President."[7]