If the mohammedans view Barack as an apostate I would expect these communities to heavily support his opponent Hillary.
If they view him as a stealth mohammedan I would expect these communities to vote "uncommitted" or "Ron Paul" to avoid hurting his chances.
Hard to say..Probably uncommitted...Could be the blacks and the Mohammedans are both voting uncommitted while the other Dems are playing spoiler by wasting their votes on Ron Paul...
Surely, someone can find out how Dearborn is swinging from going to newsgroups. Personally, I would find it interesting from a purely academic perspective; and to learn if the mohameddans view Obama as one of their own or as an apostate.