I understand your point. But the leftists hate Bush far more,than they hate Israel, besides, they know that Kerry really hates it too, regardless of having a brother who converted to Judaism.
I know you think, that if the left finds out Kerry has a Jewish brother, they turn against him, but as I said, they hate Bush more than they anything or anyone. They don't care if Kerry makes a pact with the devil, just so he defeats Bush.
I think the Jewish voters, on the other hand, may well be reassessing their blind support for the Democrats.
Kerry's "support" for Israel is the same "I supported them, before I voted against their interests" as we've seen on other issues.
I've heard that at least one of Alan Solomont's prominent donors has told him and the democrats to pound sand. There's a great deal of dissatisfaction within the Jewish community with the democrats politics....it's not a stampede but there is a real shift.