McCain wins in PA ;-)

Hillary Clinton's victory enough to keep destructive campaign going

Here's the simple reality of this corrosive slugfest: Hillary Clinton can't win, but she's convinced Barack Obama just might lose.

So unless her cash-starved campaign can't raise or borrow enough to compete, her Pennsylvania victory keeps her in, and she will ratchet up her slash-and-burn tactics that have driven her negatives up but thrown Obama off his game.

"There's every reason to continue and very little reason not to," said pollster Doug Schoen, longtime partner to Clinton confidant Mark Penn.