Obama, according to Elvin Lim:
[T]he longer Ron Paul and Newt Gingrich stay in the race, the more likely the Republicans will be headed toward a brokered convention, and new developments keep making what was once a journalist’s dream a palpable possibility. Gingrich’s superPAC just got a 10 million infusion from Sheldon Adelson, and with a lock on Georgia’s delegates, he has no incentive to drop out anytime soon. Ron Paul, of course, is the only candidate in this race in it for the ideas and the ideas alone, so he is guaranteed to stay on for as long as he can shape the debate. When 2012 is wrapped up, it may well be that only one person unambiguously benefited from Citizens United and the rise of the superPACs to sustain the campaigns of what would once have been longshot candidates — the same person who had initially opposed Citizens United, Barack Obama.
The Dish 