Some vexing possibilities that we may have to overcome:
The withdrawing of Obama from the race. (Remember LBJ?)
Obama challenged on the 'Rat side and will not be their nominee (though this not likely).
The entrance of Donald Trump as a third party candidate to split the GOP vote. (Remember Ross Perot?)
The possible nomination of a GOP candidate who, while not quite McCain, may not be very popular among conservatives.
Not being pessimistic here, only realistic.
Let’s not forget that he’s the head of the party that believes people should vote early and often, and never be required to show picture ID when doing so.
Thanks for the ping!