Albert Arnold Gore Jr. is an American politician, businessman, and environmentalist who served as the 45th vice president of the United States from 1993 to 2001 under President Bill Clinton. He previously served as a United States Senator from Tennessee from 1985 to 1993 and as a member of the U.S. House of Representatives from 1977 to 1985. Gore was the Democratic nominee for president of the United States in the 2000 presidential election, which he lost to George W. Bush.