Nobody can fine you a site that says so. (but go to google and search for "daily tracking polls" and you'll get gallup, rasmussen and realclearpolitics).
Rasmussen has a dead heat for the last week.
Gallup has Obama up a few points.
I've seen three different electoral maps and they agree that McCain has a slight advantage, but there are so many toss up states that any lead would make the race impossible to call either way.