First, frequent practice is a necessary element of success; poor practice equals poor perfromance:
Like other presidents, Mr. Obama’s debate preparations were hindered by his day job, his practice sessions often canceled or truncated because of events, advisers said. One session took place just after he addressed a service for the four Americans slain in Libya, leaving him distracted.Second, one should respect the activity and one's opponents:
Mr. Obama does not like debates to begin with, aides have long said, viewing them as media-driven gamesmanship. He did not do all that well in 2008 but benefited from Senator John McCain’s grumpy performances. Mr. Obama made clear to advisers that he was not happy about debating Mr. Romney, whom he views with disdain. It was something to endure, rather than an opportunity, aides said.Third, one has to adapt to the situation in the round. The judge and the competitor may not do what one anticipates.
On stage, Mr. Obama seemed thrown off as Mr. Romney emphasized elements of his agenda that seemed more moderate and was surprised that the moderator, Jim Lehrer of PBS, did not pose more pointed questions. The president’s team had decided in advance not to raise Mr. Romney’s tenure at Bain Capital, aides said, but Mr. Obama held back on other attack lines they had intended to use. The base wanted him “to gut Romney,” one adviser said, but swing voters hate that and he was seeking a balance. Few thought he found it.Fourth, knowing how well one did is often difficult:
Mr. Obama walked off the stage thinking he at least had gotten in some of his points. “This was a terrific debate,” he said in the closing minutes.
“He knew that Romney had had a decent night as well,” Mr. Axelrod said later. “But it’s very hard when you’re standing there. It’s hard when you’re up there to judge it completely.”