Former North Carolina senator John Edwards
Still high from his victory in the last debate, Edwards tried to pick up where he left off but soon realized his aggressive stance was ineffective against Clinton's pushback. Appeared to lose his mojo and disappeared for long stretches, coming off more as petulant and irrelevant than strong and tough. Lost 65% of the gains he made in the previous debate. (Again, the back of the envelope.)
—By Mark Halperin