In the third debate, Obama had to show in 90 minutes that the first two debates were a fluke, and that Romney was not presidential enough to end his tenure. He did not do that by any means

◼ Romney Should Be Pleased - Victor Davis Hanson/National Review

...for all his pique, interruptions, and attacks, Obama scored few points against the workmanlike Romney who knew that he simply did not have to lose. In any debate, when the two score comparable points, the more aggressive and petulant usually comes off less well, especially given that Romney’s tone and expression were more like the reflective performance of his wildly successful first debate. The take-away quotes and sound bites from the debate will favor Romney.