Bickering between rivals really does nothing in the general election as we have seen in 2008. If so we would have President McCain right now as Hillary and Obama had some of the nastiest campaign rhetoric seen in a long time.
Pandering to the Hispanic vote by ignoring our nation's immigration laws does not win them over as seen in 2008 with McCain. As for the Jewish vote, if they do care about Israel to the point it determines who they vote for, then Obama is in ALOT of trouble. As we saw recently with the Democrats losing Anthony Weiner's seat as Orthodox Jews voted in droves because of the administration's poor position on Israel.