Mazda, the antipathy the press has for him dates back to the 90s.
Remember that supposed $400 haircut, that kept Air Force One waiting? It was pure fiction, invented by a scorned reporter. An expose in Vanity Fair revealed this. Records from the FAA determined that there was no delay whatever in the flight schedule. When the spokeswomen for the FAA commented on this issue, she merely said,"No one asked us."
I don't know what kind of falling out Bill had with the press, but I see the same pattern reemerging.
By contrast, Obama has been worshipped by the press, so far. I don't know if he's going to win the nomination, but I believe that, if he does, the press will crucify him.