Today, you can predict pretty accurately how someone will vote from which interest group she belongs to. I say “she”, not out of political correctness, but because this is most obvious for females.
The gimmedat party is non whites and single white females. And it has a majority in the US. Thus, Obama and Romney pander to it to precisely equal degrees. This is the end state of democracy, for the politicians seeking votes will steadily increase the gimmedats, until they have a majority, whereupon democracy self destructs.
Even if a Sulla cured the problem by throwing the gimmedats off the voter rolls, this would not be a permanent solution, because it would remain in the interests of politicians to create more gimmedats and put them on the rolls.