^^^ If it wasn't on DailyKOS, it can't be a good poll! (Not that Fox is any better as a biased source)
Nothing like a good Rasmussen small sample size poll : D If you look at the internals of that poll, you can tell it is a poorly conducted survey. That poll has McCain as more favorable towards remedy the economy, which goes against every other poll, and even with that, Obama is still only down 2 points.
Rasmussen did a Sunday only poll, which is apt to be more favorable to a Republican candidate, while using a small sample size, and had a large error (+/- 4.5).
Obama underpolled in the SurveyUSA poll during the primaries, and significantly underpolled in the final Rasmussen poll for the Democratic Primaries. He outperformed the final Rasmussen poll by 116%.
I really don't have a clue what will happen with Virginia. Virginia is a pure toss up. All these polls will be in the margin of error or at least the ones that are close to accurate. Once again though, Obama will have a ton of new supporters backing him in this state and that plays to his advantage. On the flip side, the state hasn't gone blue since LBJ, that plays to McCain's advantage.