Rep. Joe Sestak is under fire from all quarters. First, this boffo ad from Keep Israel Safe slams him for his record on Israel and on terrorism:

Then the Philly media gets on his case for JobsGate (the alleged job offer to get out of the primary race):

When asked about the accusation, as he was again Sunday on NBC’s Meet the Press, Sestak says, yes, the offer was made. But he won’t say what it was, or who made it.

This too-cute-by-half stance may allow him to tout his independence and outsider credentials — important in an anti-incumbent year like this one. But by not being specific, Sestak is covering up what appears to be the ultimate insider deal — and a potential crime.

His opponent, Pat Toomey, has every reason to capitalize on both of these points of weakness. First, Toomey has been a strong critic of Obama’s policies with respect to Iran and Israel. Second, although he previously served in Congress, in this race he’s the outsider (and former Club for Growth president) who can take on Washington’s backroom dealing and spend-a-thon. In Pennsylvania, both of those themes may be winners. And if they are, the 2012 GOP presidential contenders will take note.

UPDATE: Gov. Ed Rendell is now calling for Sestak to cough up more facts. I suspect he wouldn’t have done so if the White House was not on board. Is Obama hanging Sestak out to dry or coming up with a cover story? Stay tuned.