Longest Serving Politicians

William Morris Hughes was Australia’s longest serving Prime Minister until 1957 when Robert Menzies overtook Hughes’ record term from 1915 to 1923. Hughes’ other record still stands: no parliamentarian has surpassed his 51 years and 7 months of continuous service as a member of Australia’s House of Representatives – from the 1st parliament in 1901 to the 20th in 1952.

John David Dingell, Jr. (born July 8, 1926) is an American politician who has been a member of the United States House of Representatives continuously since entering Congress on December 13, 1955. He is a member of the Democratic Party. On June 7, 2013 he reached 20,997 days of membership, surpassing Senator Robert Byrd as the longest-serving member of Congress in history.