[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/11/05/art.mccain.nov.gi.jpg caption="What was the likable 'maverick's' biggest mistake?"] FROM CNN's Jack Cafferty: What happened to John McCain? The likable "maverick" who beat some pretty strong competition to capture his party's nomination had morphed into something else by yesterday. After promising to run an "honorable" campaign, McCain quickly became another symbol of the divisive … Continue reading McCain’s biggest mistake?