“„Obama did not gain any additional support in the poll since his generally well-reviewed acceptance speech on Thursday night.
“„The convention, and particularly Obama’s speech, seems to be well-received. And the selection of Sarah Palin as the GOP running mate also seems to be well-received. So why is the race still a virtual tie? Probably because the two events created equal and opposite bounces assuming that either one created a bounce at all.
“„[A]mong the critical undecideds, the Palin pick made only 6 percent more likely to vote for McCain; and it made 31 percent less likelyto vote for him. 49 percent said it would have no impact, and 15 percent remained unsure.