UPDATE: This diary generated a lot of discussion at Daily Kos. Several readers pointed me to Glenn Greenwald’s rebuttal of Podhoretz’s central claim: Jews should vote Republican because of Israel. Leon Wieseltier’s review of Podhoretz’s book for The New York Times is also worth reading.

Norman Podhoretz began his political life on the Trotskyite left but swung sharply to the right and edited the conservative magazine Commentary for more than three decades. His latest book is called “Why Are Jews Liberals?”, and he published a few thoughts on the subject in the Wall Street Journal this week.

All the other ethno-religious groups that, like the Jews, formed part of the coalition forged by Franklin Delano Roosevelt in the 1930s have followed the rule that increasing prosperity generally leads to an increasing identification with the Republican Party. But not the Jews. As the late Jewish scholar Milton Himmelfarb said in the 1950s: “Jews earn like Episcopalians”-then the most prosperous minority group in America-“and vote like Puerto Ricans,” who were then the poorest.

Jews also remain far more heavily committed to the liberal agenda than any of their old ethno-religious New Deal partners. As the eminent sociologist Nathan Glazer has put it, “whatever the promptings of their economic interests,” Jews have consistently supported “increased government spending, expanded benefits to the poor and lower classes, greater regulations on business, and the power of organized labor.”

As with these old political and economic questions, so with the newer issues being fought out in the culture wars today. On abortion, gay rights, school prayer, gun control and assisted suicide, the survey data show that Jews are by far the most liberal of any group in America.

After the jump I’ll offer my thoughts about why many Jews are liberals and, equally important, why many Jews who are not liberals vote for Democrats anyway. Podhoretz is convinced that more American Jews should identify with political conservatives, but today’s Republican Party makes that unlikely.