Though only 17 of the 47 presidents were governors, only four men (James Garfield, Warren Harding, John F. Kennedy and Barack Obama) have gone directly from Congress to the White House. Among Democrats, however, the last sitting or former governor to win a presidential nomination was Bill Clinton. Indeed, the last governor to run a viable Democratic nomination contest was Howard Dean in 2004, and his signature issue was foreign policy (his opposition to the Iraq War).