But why do regions that rely on the safety net elect politicians who want to tear it down? I’ve seen three main explanations. ¶ First, there is Thomas Frank’s thesis in his book “What’s the Matter With Kansas?”: working-class Americans are induced to vote against their own interests by the G.O.P.’s exploitation of social issues. And it’s true that, for example, Americans who regularly attend church are much more likely to vote Republican, at any given level of income, than those who don’t. ¶ Still, as Columbia University’s Andrew Gelman points out, the really striking red-blue voting divide is among the affluent: High-income residents of red states are overwhelmingly Republican; high-income residents of blue states only mildly more Republican than their poorer neighbors. Like Mr. Frank, Mr. Gelman invokes social issues, but in the opposite direction. Affluent voters in the Northeast tend to be social liberals who would benefit from tax cuts but are repelled by things like the G.O.P.’s war on contraception.¶ Finally, Cornell University’s Suzanne Mettler points out that many beneficiaries of government programs seem confused about their own place in the system. She tells us that 44 percent of Social Security recipients, 43 percent of those receiving unemployment benefits, and 40 percent of those on Medicare say that they ‘have not used a government program.’