If true, it is because he is not more Liberal.
Probably a big factor, although I think we can be sure that something less than 100% of the "non-supporitive" black voters will fall into the he's-not-liberal-enough category.
Nevertheless, if a large number of African-Americans become lukewarm to the Big Ø for any reason, then black turnout is likely to fall significantly for the 2012 election. And that can only be a very good sign for the 'Pub side of the political spectrum.
Or vocal, perhaps, calling out those white crackers on their racism.
Precisely. They haven't received their "Obama checks" yet. Obama hasn't paid their mortgage and filled their tanks with gas. But they'll all vote for him in 2012, so he doesn't give a rat's ass.
Rarely has a politician and a voting bloc deserved each other so well.