Gary Warren Hart (born November 28, 1936) is an American politician, diplomat, and lawyer. He was the front-runner for the 1984 and 1988 Democratic presidential nominations, until in 1988, he dropped out amid revelations of extramarital affairs. He represented Colorado in the United States Senate from 1975 to 1987. The following is Hart's public announcement on May 8, 1987 that he was ending his presidential campaign.