Expectation setting in PA is a dire hint for the Hillary campaign. Wolfson is clearly setting the stage for a narrow Clinton win due to recent polling:

Clinton communications director Howard Wolfson said Obama has spent $6.5 million on TV ads in Pennsylvania, while the Clinton campaign has spent $2.5 million.

“He is doing everything he can to win in Pennsylvania,” Wolfson said. “And if he doesn’t win, it will be a significant defeat for him.”

Remember. She was up double digits not long ago. 18-20 points. Anything less than 15% is lower than expected. Anything less than 10% is a perceived loss for her. Anything less than 5% is a complete disaster! Howard and everyone else knows that Hillary is supposed to win and win big in PA. His suggestion that somehow any loss for Obama is a disaster is laughable.