Reposted because it’s newsworthy.

And our graphs (based on data from the late 1990s):

Screen Shot 2013-07-16 at 11.57.51 PM

[Cross-posted at The Monkey Cage]

Independent since 1969.

The Washington Monthly is nonprofit and reader-supported. Your tax-deductible gift pays for the reporting you just read.

Andrew Gelman is a professor of statistics and political science and director of the Applied Statistics Center at Columbia University.