Jack Cashill has written extensively on your question (cashill.com). He has even had scientific analysis done to compare the style and word choices of “Dreams..” and “Fugitive Days” — very high likelihood that Ayers took Obama’s notes and made it all purty in a radical kind of way in “Dreams.” Ayers thought Obama wanted to be Mayor of Chicago, so told the tale to appeal to that audience (hence the racial overtones and drug use revelations). Even the unrepentant terrorist had no idea how huge the EGO known as Barry Soetoro aka BHO would turn out to be. The Audacity book was likely ghost written by the speech writer kid who isn’t nearly the writer that Ayers is.
He could pull blacks (95%+) and whites who felt racial guilt, and Communists from all quarters...and then there were the useful idiots...they supported him in a great majority--they had been indoctrinated to do so.
He didn't even try for the Islamic vote because they were such a minority.
As for Obama, he believes in destiny. He believes he is the 12th Imam or the Caliph (the fact that he is a muslim was ignored except for the Saudi financial contribution...they knew the value of this).
Ignore his place in prophecy at you own peril.