An awful lot of them appear to be popping up, now don't they. The question, of course, is whether the media will ever notice or whether it will continue with the fiction that the only political conversions of note are the ones that benefit the Obama campaign. I suppose that it is possible that Republicans would not mind if the media ignored the McCainocrat phenomenon--it might make it easier to beat Obama in the general election if Obama doesn't see the various defections coming.
