As the children of Reform Jews fully assimilate into secular society, and the number of Hasidim multiplies by the second, the Jewish vote will continue to trend right.
Wait, is your point that the children of Reform Jews will stop identifying as Jewish (and therefore not count as "Jewish voters") or that the children of Reform Jews will start to hold views more in line with the average American (and therefore start voting Republican)?
He means the former. Reform Jews and their offspring are unmovable, especially in an alignment that shifts on education lines.