Actually, I have lots of statistics to back up my assertions -- and they can most easily be found in the Media Matters study that I reference in the column. In fact, the link is above. I realize that at least some of the conservatives complaining about my argument can't get past the headline, but I love their comments anyway. Annoying them always makes me laugh.
My suggestion that the Economist editors are more persuasive because they used to predict permanent Republican hegemony was not meant as a testimonial to their accuracy -- only that they seem to have learned something from their mistakes...