The political pundits are saying 7% is the magic number for Clinton in tonight's PA primary.  If her margin of victory is above that number, PA will be a decisive victory for her.

Anything below 7% and the drumbeat for her to withdraw from the race will grow louder from within the party.

Hillary is now saying the decision by the Super Delegates should not be about the popular vote (which Obama is winning), or the delegate count (ditto), or even the number of states won (ditto ditto).  It's all about which candidate is tough enough to win against John McCain in the fall.  Call it her "Obama is a girly-man" strategy.