Do many blacks support Obama just because he's black?

A radio DJ in NY went to Harlem to see if Obama supporters support him for his policies or because of his race. The DJ asked if they supported specific Obama policies, but gave them McCain policies which differ from Obama's policies. In the cases they highlight, the Obama supporters said that they are going to vote for Obama because of his policies but then agreed with McCain's pro-life and Iraq war stances and even his choice of Sarah Palin for VP.

http://www.bpmdeejays.com/upload/hs_sal_in_Harlem_100108.mp3 (Audio link)