Joseph Isadore Lieberman (/ˈliːbərmən/; born February 24, 1942) is an American politician, lobbyist and attorney who served as a United States Senator from Connecticut from 1989 to 2013. A former member of the Democratic Party, he was its nominee for Vice President of the United States in the 2000 election. During his final term in office he was officially listed as an independent Democrat and caucused with and chaired committees for the Democratic Party.
Lieberman was elected as a "Reform Democrat" in 1970 to the Connecticut Senate, where he served three terms as Majority Leader. After an unsuccessful bid for the U.S. House of Representatives in 1980, he served as state Attorney General from 1983 to 1989. He narrowly defeated Republican incumbent Lowell Weicker in 1988 to win election to the U.S. Senate, and was re-elected in 1994, 2000, and 2006. He was the Democratic nominee for Vice President in the 2000 United States presidential election, running with presidential nominee and then Vice President Al Gore, and becoming the first Jewish candidate on a major American political party presidential ticket.