I used to believe this, but have been reading about George Wallace, TX politics, the influence of oil and Evangelicalism and I gotta say that around 40% of the country is just nuts.
The "crazification" percent of the population is around 28%. Basically the ppl whose voting patterns could just as well be explained by massive head trauma.
That was the percent that voted for Alan Keyes a couple decades ago in Illinois and that number keeps repeating over and again.