People who voted Democrat are not the same as Democrat voters in the polls being discussed.
I do not think that you are talking about the number of votes for Obama vs McCain, are you?
Certainly the overall vote was much higher for Obama, but that is not what the discussion is about.
Even in the bogus polls, The GOP is going more for Romney than the Dems are going for 0bamugabe
We have people who seem to believe THAT CAN'T BE but, of course, it's always true ~ because there are more Democrats.