George McGovern, who's presidential race was destroyed by Hubert Humphrey (who thought -- for the second time in 1972 -- that he had the right to claim the Democratic nomination because of his former status and age) has switched his support to Barack Obama and has called on the Hillary people to drop her bid.
McGovern (85) says he's proud of his earlier support of the former first lady.
See Huffington Post: George McGovern Switches To Obama, Urges Clinton To Drop Out