Joel Kotkin:  Interesting thesis.  Obama and Democrats are appealing to singles, including single mothers.  Eventually this Democrat power base will collapse because they are not having children. 

And even as the president has slipped in the polls, the fast-growing Single Nation has stayed behind him. Unmarried women prefer Obama by nearly 20 points (56 to 39 percent), according to Gallup, while those who are married prefer Romney by a similarly large margin.
 

Unmarried women (along with ethnic minorities, the poor and the workers in the public bureaucracy) are rapidly becoming a core constituency of the Democratic party, in a sense replacing the ethnic white working class.

But the Single Nation’s grip on power may not be sustainable for more than a generation. After all they, by definition, will have no heirs. This, notes author Eric Kauffman, hands the long-term advantage to generally more conservative family-oriented households, who often have two or more offspring. Birth rates among such conservative populations such as Mormons and evangelical Christians tend to be twice as high than those of the nonreligious.
 

As a result, Kauffman predicts that inevitably “the religious will inherit the earth” and ensure that conservative, more familial-oriented values inevitably prevail. Even among generally liberal groups like Jews, the orthodox and affiliated are vastly out-birthing their secular counterparts; by some estimates roughly two in five New York Jews is orthodox, including three quarters of the city’s Jewish children. If these trends continue, politics even in the progressive nirvana of Gotham may be pulled somewhat to the right.