Obama retains a four-point lead overall in the race. But this is just astounding.

http://firstread.nbcnews.com/...

Looking inside the numbers, Obama continues to lead Romney among key parts of his political base, including African Americans (94 percent to 0 percent), Latinos (by a 2-to-1 margin), voters under 35-years-old (52 percent to 41 percent) and women (51 percent to 41 percent).
Romney is ahead with whites (53 percent to 40 percent), rural voters (47 percent to 38 percent) and seniors (49 percent to 41 percent).

Zero.