No do-overs

Obama fluffed the first debate and lost the lead over Romney he had had for nearly a year.

Did anyone notice Biden vs. Ryan, or even Obama vs. Romney II and III?

Update, 11022012, 1244 hrs EDT.

It is more than merely plausible that, Democratic felony aside, Nixon lost the election of 1960 when he badly fluffed the first debate, though he tied or won each subsequent debate.