Editor’s note: John P. Avlon is a senior political columnist for The Daily Beast and author of "Wingnuts: How the Lunatic Fringe is Hijacking America." 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/2010/images/03/04/gop.politico.art.jpg caption="The RNC … Continue reading Avlon: 'Wingnuts' reinforce partisan stereotypes