a) Most Orthodox Jews are supporting the re-election of George W. Bush, because he is percieved as the more pro Israel and more pro family values candidate than Kerry. Therefore if the neighbors thought that a "Support President George W. Bush" sign would be insulting to the couple, they are sorely mistaken.

I don't know the breakdown among the various Jewish denominations, but most Jews are NOT supporting Bush. Polls show that 70+% of Jewish voters are supporting Kerry.