I'm not going to post any election predictions because, while I don't believe in the Bradley effect, I am a bit wary of the bandwagon effect.
But here is something to mess with your minds.
The polls have fluctuated a bit, but Obama has been ahead nationally by 2 to 10 points and is, by poll average, ahead in enough states to win comfortably in the Electoral College.
But what if there is a systematic bias in favor of the Democrats (as there were in the exit polls in 2004) and a late surge for McCain. Libertarian blogger Vox Day (who is not voting for McCain) thinks you have to adjust the polls by 5% in favor of the GOP. I certainly wouldn't think there is any rule to that effect (I don't think that pollsters generally overstate the Democrat vote by 5%), but, if the poll results are affected by assumptions regarding turnout and party identification that don't hold up, it could happen.
Blogger Baseball Savant, tries that adjustment, using 538.com's projections. McCain wins with 274 electoral votes. If you use the RCP averages, you can get McCain to 271, but only if you ignore a half point in Colorado.
Of course, for this to happen, the error would have to be systematic. There would have to be enough polls with a methodology skewed in the same direction to have significantly pushed the averages to the left. (Note: I am not talking about the statistical margin of error here. That's another thing altogether.)
Testing this theory would require more work than I have the time or inclination to do. For example, how do the adjustments for each poll work (I suspect that all of that info isn't even publicly available) and is there any poll that shows a McCain win or a collection of states that exceeds 270 within the statistical margin of error or with a McCain lead? Fox/Rasmussen is close but not quite there. IBD/TIPP is within the margin of error nationally, but I am unaware that it does state polling.
So, you'd have to have a systematic Obama error in almost all of the polls and a surge to McCain.
This may be unlikely, but it's not impossible. We probably won't know more based on leaked exit polling because those are likely to overstate Obama's vote as they overstated Kerry's.