Obama's decline is the worst ever recorded in a Gallup poll.
-- George W. Bush, 86 percent
-- Bill Clinton, 52 percent
-- George H.W. Bush, 71 percent
-- Ronald Reagan, 49 percent
-- Jimmy Carter, 57 percent
-- Gerald Ford, 52 percent
-- Richard Nixon, 59 percent
-- Lyndon Johnson, 74 percent
-- John Kennedy, 77 percent
-- Dwight Eisenhower, 69 percent
-- Harry Truman, 49 percent