Joe Sestak’s campaign is doing his opponent’s work for him.

Sestak is coming under fire from AIPAC, the American Israel Public Affairs Committee, for running a print ad in the Philadelphia Jewish Exponent claiming that, “According to AIPAC, Joe Sestak has a 100 percent pro-Israel voting record.”

The problem? “It couldn’t be true, we don’t rate or endorse candidates,” AIPAC spokesman Josh Block tells Ben Smith of Politico. “Joe Sestak does not have a 100% voting record on Israel issues according to AIPAC.”

This embarrassing flap comes directly on the heels of his opponent, Pat Toomey, calling for Sestak to return campaign contributions from “far left” groups and J Street, a left-wing rival to AIPAC funded in part by George Soros.

Sestak has also accepted contributions from the Council on American Islamic Relations, an unindicted co-conspirator in a Hamas-related case. Earlier this year, he signed a letter reprimanding Israel for “collective punishment” in its response to weapon- and pipe-wielding attackers on an aid ship destined for Gaza.

Sestak was one of 54 to sign the letter, though has since backed off that condemnation. His campaign said earlier this month that “the one Israel-related action he regretted was signing on to the infamous ‘Gaza 54′ letter and if he had to do it over he would have sent an individual letter.”

The Republican Jewish Coalition was unavailable for comment today due to religious observance.