Decades ago, the late Milton Himmelfarb famously summed up the Jewish vote by saying "Jews earn like Episcopalians but vote like Puerto Ricans," suggesting that the ballots of high-earning Jews unexpectedly looked like those of low-income voters. This pithy observation summed up Jewish demographics and voting for half a century. It also launched a trove of articles and more than a few books on the mystery of Jewish voting patterns. Why didn't Jews follow the pattern of other white ethnic groups like the Irish or the Italians, who became more conservative as they assimilated?