This will probably be a big Duh for some of you, but it was news to me. senryu forwards the following snip from Garance Franke-Ruta's article "Remapping the Culture Debate," in the latest ish of American Prospect. I've added the emphasis below, for those who skim. ;)
"The growing conflation of the economic and the cultural in the minds of voters has been a cause of great perplexity for thinkers who have long seen the two realms as distinct, and the cultural realm as the secondary concern of unserious men who don't know where their self-interest lies. Thomas Frank, in his 2005 What's the Matter with Kansas?, sketched a portrait of lower- and middle-income voters who, socially at odds with a liberal elite they accuse of moral dissipation, have forged an alliance with a conservative fiscal elite whose economic policies, paradoxically, do little to support their worldview or shore up families. Yet the broader social reality suggests that the focus of these middle-income voters on cultural traditionalism is not entirely separate from their economic aspirations. Social solidarity and even simple familial stability have become part of the package of private privileges available to the well-to-do. Behavioral surveys consistently show that, regardless of their political leanings, the better-off and better-educated live more traditional personal lives: They are more likely to marry, far less likely to divorce, less likely to have children outside of marriage, and more likely to remarry when they do divorce than their less accomplished peers. In addition, their kids are more likely to be academically successful and go to college, repeating the cycle.
"The new Puritanism and cultural conservatism Frank described can also been seen as symptoms of how, in today's society, traditional values have become aspirational. Lower-income individuals simply live in a much more disrupted society, with higher divorce rates, more single moms, more abortions, and more interpersonal and interfamily strife, than do the middle- and upper-middle class people they want to be like. It should come as no surprise that the politics of reaction is strongest where there is most to react to. People in states like Massachusetts, for example, which has very high per capita incomes and the lowest divorce rate in the country, are relatively unconcerned about gay marriage, while those in Southern states with much higher poverty, divorce, and single-parenthood rates feel the family to be threatened because family life is, in fact, much less stable in their communities. In such environments, where there are few paths to social solidarity and a great deal of social disruption, the church frequently steps into the breach, further exacerbating the fight.[...]"