Maurice Robert Gravel, better known as Mike Gravel (born May 13, 1930) is an American Democratic politician. He was member of the Libertarian Party from 2008 to 2010 when he re-joined the Democratic Party. He served as a United States Senator from Alaska (1969-1981) and, previously, as member of the Alaska House of Representatives (1953-1966, speaker from 1965-1966). Gravel was a two-time presidential candidate in 2008 and in 2020.