Well, Jews are hardly a homogenous voting bloc. Russian Jews and Orthodox Jews (who I assume pushed McCain over the top) vote very differently from Jews whose families came over in the 1880's.
1. my numbers were assuming that the area in question seceded from NY state. In actuality this state would be a solid conservative Democratic seat (think Manny Celler) and could go Republican when they go left Like Obama, Weprin, Fidler ext. The area is demographically trending democrat (may eventually reveres itself due to Orthodox birth rates) but the people are trending Republican
2. there are quite a few Orthodox Jews who's families (at least part of it) came over in the 1880's. On my father side part of my family might have been here since the 1880's. My maternal Grandmother was born on the Lower East Side in the teens which is very similar to the avg American Jew Orthodox, or atheist. The only difference was she stayed Orthodox and they abandoned Judaism.