If the Jews have to choose between a Mormon and Moslem, they’ll take the Muslim.
Romney doesn’t need the majority of them, but anything north of 25-30% is potentially fatal for the Moslem.
Lib Jews will deny that he’s a Muslim, will call you a racist for saying that he is, and vote for him in a huff. If they really believed he was a Muslim, they’d short circuit and start singing Bicycle Built For Two. So they live in denial, and carry out a mad death wish rather than admit that they are destroying themselves and all that they hold dear.