Paul Krugman has a blog post at the New York Times that seems to be based on no research at all. But it has a snappy four-cell matrix so you’ll know it’s like real economics.
Krugman’s argument is that “there basically aren’t any libertarians.” And here’s the graph that proves it:
See how small the letters are in two of the boxes? That shows you that there aren’t any people in those boxes. “There ought in principle, you might think, be people who are pro-gay-marriage and civil rights in general, but opposed to government retirement and health care programs — that is, libertarians — but there are actually very few.” And there are also very few people who are “socially illiberal” and supportive of government social programs, he says.
But you know, there’s research on this. David Kirby and I have done some of it, in studies on “the libertarian vote.” But two political scientists examined a similar matrix back in 1984 and found roughly even numbers of people in each box.
Part of the trick here is that Krugman has used a vague term, “socially liberal,” for one of the dimensions of the matrix, and a radical policy position, “no social insurance,” for the other dimension. The logical way would be to use either common vague terms for both dimensions – say “socially liberal/conservative” and “fiscally liberal/conservative” – or specific and similarly radical terms for both dimensions, something like “no social insurance” and “repeal all drug laws.” Wonder how many people would be in the boxes then?
“No social insurance” is a very radical position. Even many libertarians wouldn’t support it. Like Hayek. So to find the divisions in our society, we might choose a specific issue of personal freedom – gay marriage, say – along with an equally controversial economic policy such as school choice or a constitutional amendment to balance the budget.