Zero percent. That's quite a feat. I guess those secret black supporters of Mitt's are so stealthy that they refuse to tell an anonymous pollster that they support him:
http://firstread.nbcnews.com/_news/...to-conventions-obama-has-four-point-lead?lite
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).
http://firstread.nbcnews.com/_news/...to-conventions-obama-has-four-point-lead?lite