Given that very little substance was offered, I think Obama came across as looking and sounding more confident, more likable, more concerned about voters concerns and generally more "presidential"
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I'm a little surprised that the spread was so wide on the network "insta-polls" of undecided focus groups:
NBC's focus group of undecided Pennsylvania voters had Obama winning by 60-40
CBS's focus group of independents had Obama winning 39-27, with 35 percent saying it was a tie.
CNN's focus group of undecided voters in Ohio had Obama winning 54 -30.