Editor's note: John P. Avlon is the author of Independent Nation: How Centrists Can Change American Politics and writes a weekly column for The Daily Beast. Previously, he served as Chief Speechwriter for New York City Mayor Rudy Giuliani and was a columnist and associate editor for The New York Sun. [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/05/07/bachman.mckinney.art.jpg caption= … Continue reading Commentary: Wingnuts of the week