Only once since the beginning of August had any poll showed Trump leading by less than double digits, and that poll had him up seven. Today’s four-point lead over Carson is the slimmest advantage he’s had since Trumpmania started to break big six weeks ago. In fact, with a six-point margin of error in the new NYT/CBS survey, it’s possible that Carson has already passed Trump for the lead nationally. How’s that for a pre-debate aperitif?Jeb Bush and Scott Walker, whom many thought would be the last two men standing for the nomination, are at eight percent. Combined.Mike Huckabee...