The first presidential debate of the general election is often the most treacherous – especially for the candidate who steps on stage with the presumed advantage. Which is why Democratic nominee Hillary Clinton, the one in that position this time around, knows not to take anything for granted. Monday’s 90-minute faceoff at Hofstra University on Long Island is projected to have the biggest audience ever for politics’ equivalent of the National Basketball Association playoffs, with estimates that upward of 100 million people will be watching. “You can’t really win an election in a debate, but you can lose one,” said Brett O’Donnell, a communications consultant with long experience coaching Republican presidential candidates.