Make an impact after what both sides believed was a lackluster performance in his first debate. even the president said so himself. the challenge will be somewhere between his first performance and vice president biden's performance, finding that sweet spot, wher whether he can do itd for governor romney whetherel capitalize on what was a good run the first time around. >> megyn: a word about the audience here, the town hall participants. there are some 80 there. they all submitted their questions. candy crowley selected the ones that will be used tonight. right now 80 nervous souls out there,...