The only flaw in Jonathan Chait's awe-inspiring graph of Republican presidential contenders by sanity and Mormonism -- and if you don't click through to it, you're really making a mistake -- is that it's slightly unclear exactly how he's measuring along the x-axis -- in what way is Newt Gingrich more Mormon than John Thune? Is Chait factoring in the chances that one of Newt's future wives will get him to convert (again)?
I'd also really dispute the idea that Haley Barbour is insane, note that it doesn't really sort well with Chait's much better casting of Barbour as Boss Hogg. Personally, as a fan of "sleazy, corpulent, cigar-chomping lobbyist[s]," I'm rather disappointed to see that Chait considers such folks to be below par on his crazy-meter.
OK, fine; it's more of an idea of a great graph than an actual great graph, one that Gelman would approve. So it probably can't touch this one or this one. But it's good, anyway.