Much of political belief is regional. A majority of Jews live in areas like S Fla New York and California- areas that trend very liberal. There are an increasing amount of conservative Jews becoming more and more important to the Republican party.
Mark Levin, a Jew, is perhaps the most articulate and knowledgeable of all the conservative talk show hosts. WIth his Landmark Legal Foundation he has successfully defended liberty against tyranny at the Supreme Court. He is the one who identified Saul Alinsky as an icon for the current left and he has been a champion of the campaigns of Paul Ryan and Michelle Bachmann among many others. I think more Jews will vote Romney this time than people think.