The White House Marathon
A dozen candidates for the White House are in the field. After next week's Iowa poll half of them will fall at the first fence, with nearly a year to go. Is this relentless marathon the best way to pick a President or just a trial by ordeal of stamina and organisation? David Jessel talks to the candidates and the secret army of professionals behind them about the nature of the race to the White House and the skills needed to win it.
Producer ADRIAN MILNE Editor PETER LBBOTSON