I watched the debate on a number of networks (switching back and forth) and recorded a rerun of it from C-Span.
Unlike the other networks, C-Span's cameras stayed with the debate room following the festivities, since its follow-up is not with talking heads but with ordinary folks who call in. The comments range on one end from thoughtful and articulate to the other end, or ranting, raving, and incoherence. This is true of supporters of both major candidates and of other candidates. For the most part, they're pretty entertaining.
Most of the time while these calls were airing, C-Span showed the after-party. It was telling. The cameras watched as the two candidates and their wives worked the room. (This included the moment when the McCains and Obamas were in the same part of the room, and John refused to shake Barack's hand, passing him on to Cindy instead.) All this was aired completely without comment, except for the occasional "we're watching video of the candidates talking with the audience" or something similar. The audience talked, shook hands with the candidates and wives, had their photos taken with them, solicited autographs. After a short time, I noticed that the cameras were trained solely on Barack and Michelle, who were surrounded. Even without sound, the crowd's excitement was palpable.
At first, I thought there was a bit of favoritism going on on C-Span's part, but then realized that the McCains had left (this was later confirmed by the on-air journalist, probably to explain why only the Obamas were being filmed). In the meantime, the audience -- independent/undecided voters, if I recall correctly -- were eating up the attention from the Obamas. This struck me as classy, for one thing, and wise for another. Maybe the cost benefit for spending extra time with those 80 people wasn't that high -- but maybe it was. Each of those people has friends, after all. Add to that all the people still watching at home who saw what I saw: the one man left the hoi polloi behind as soon as possible while the other one ("that one") stayed to mingle.
Yet another example of the wide gulf between the two candidates.
(Wish I could find video, but I can't, and I'm too technologically dumb to create my own.)