Georgia
Georgia has been an elusive target for national Democrats: apart from favorite son Jimmy Carter, no Democratic presidential candidate since John Kennedy in 1960 has received a majority of the Peach State’s vote. Of the candidates on that list, perhaps the most surprising was Lyndon Johnson: though Johnson had expected to carry Georgia, Barry Goldwater benefited from a surge of backlash voters, coupled with local distrust of LBJ's chief backer in the state, Governor Carl Sanders.
Deep South neighbors Louisiana, Mississippi, and Alabama also went GOP in 1964. The President’s reaction to the result, from an Election Night conversation with Bill Moyers: