As for getting a clue, Jews after 2000 years of persecution tend to go with the party that loves them, at least at face value. They feel they have less of a chance of being burned at the stake being the perceived “nice guys”, than hanging around with right wingers.
While with a little understanding that is a false premise, your attitude, and quick biting turn on the guy that called you on your tude goes a long ways in convincing most Jews that they are right in suspecting the “Right wing”. Remember that Fascist's are called right winger in leftist school.
And Jews do tend to go to school... In short, if you want to really know the answer to your question, why the jews vote left, your behavior is your answer.
Just because someone is a Jew, doesn’t mean he can’t also be a dickhead, or do they warrant “special treatment”? Anyone voting for, or supporting 0bama, while at the same time crying that he is trying to destroy Israel is either a total idiot or a dickhead - take your choice!