Chait upgrades Mitt's chances:
Romney still has enormous vulnerabilities if the right opponent can exploit them. And it’s worth keeping in mind that Perry will have more success exploiting them through written speeches and paid advertisements — he’s just too slow-witted to express them in debate. Still, we may be approaching a danger zone for Perry where the Party Establishment panics about his suitability and throws itself openly behind Romney.
Nate Silver finds evidence that Romney is already winning the endorsement race.