Notice how hard the USA Today website tries to down play this story.
They wait until the 4th paragraph to tell you what the actual numbers are.
And when they do, they first mention the poll of registered voters instead of likely voters, which is mentioned second.
Obama still has a lead in registered voters while McCain has a lead with likely voters.
But of course the likely voter poll is the only one that matters, since almost half of registered voters will not vote. A poll of registered voters is useless, not just in this election but in every election.