I almost never post "naked" links without some value-add, but go read Mark Blumenthal's critique of the DFA / Reserach 2000 poll in Arkansas.
I don't know whether they were trying to produce a biased poll or just didn't know any better. But my guess is the former, because someone who knew how not to produce a biased poll would be more subtle than this if they were.
5.20.2010
Homework Assignment
by Nate Silver @ 2:17 PM...see also archives
