Someone needs to dig into Politico and find out.
It could be Romney. It could be the RINO Establishment. It could be any of Cain’s other opponents. And it could be Gang Obama.
Obama might do it if their internal polling shows that Cain would wipe the floor with him in the general election.
A Cain win would neutralize the race card in the general election. Even more significantly, it would set the entire Democrat Party back — by showing blacks that it actually is possible for them to vote (R).