This sort of thing was created to try to blunt a bounce that Obama could have -- and in fact has -- received.

The Rasmussen Reports daily Presidential Tracking Poll for Friday shows a bounce for Barack Obama. The presumptive Democratic nominee attracts 46% of the vote while John McCain earns 41%. When "leaners" are included, it's Obama 49% and McCain 44%. Just three days ago, the candidates were tied at 46% (with leaners).

http://www.rasmussenreports.com/public_c ontent/politics/election_20082/2008_pres idential_election/daily_presidential_tra cking_poll

Since Rasmuseen is consistently several points behind the major national (non-tracking) polls, this looks very good.

Of course, as usual, we'll have to see if there's a broader trend.