Before I tell you what I am about to tell you, I need to tell you this: Back in 2001, as incumbent Democratic Gov. Roy Barnes was gearing up for a second term, a know-it-all columnist wrote, “I hear people say Roy Barnes will have a tough reelection. Forget it. Roy Barnes will easily win a second term.”Oops. Despite leading all the pre-election polls and outspending his opponent 6-1,...