I think Palin was a major factor. Before the VP announcement Obama was polling very badly among Jews (for a RAT). Polls were showing him around 55-60% instead of the usual 75-80%.
That shifted dramatically after he chose Palin and the MSM unleashed its lying dogs.
I can’t believe that any Jew who was going to vote for McCain would switch to the Messiah simply because Palin was the VP nominee. As I said, absolutely no evidence of Palin being anything but pro-Israel and friendly to Jews in Alaska. Could you imagine that the ‘Rat congresscritter (and impeached former federal judge) Alcee Hastings, addressing the Jewish ‘Rat group, attacked Palin as being antisemitic (and racist) because she hunts moose?! If that’s the “best” argument they can come up with, both he any Jews who would give credence to such illogic are total nitwits.