The sad part for Democrats is that Hillary's resort to negative campaigning worked, which means we're going to see a lot more of it. With her comeback, she has created the image of being scrappy, a fighter when she's down. That means Obama is suddenly being seen as someone who won't fight back. He will have to respond in kind to change that image. Net result--both are going to engage in lots more negative campaigning and mud-slinging. Conceivably this could go on until June, when Puerto Rico has its primary, and then all the way to the convention--I don't see Pennsylvania as being decisive. In the meantime, McCain benefits from the potshots Hillary and Obama are taking at each other, and gets needed time to get his campaign together to create the image of McCain they want to create, rather than playing defense. It will make the general election a lot closer. The emerging victor in the Democratic primary may be so tarnished by his/her Democratic opponent as to be unable to overcome that trashing and beat McCain.