Simple, If Cain wins the nomination will you vote for him or Obama?
The leftist fear this man! When he becomes President he will turn the country around and we will see a recovery like the world has never seen before! They know he can turn a new generations of African Americans onto Cain and the Republican party. Their gravy train will be over!
They should be happy an economic genius is about to take off the white house from a failed community organizer!