There's another poll out today showing President Obama with a nine point lead in Ohio. That's the fifth poll in a row showing him with a larger than a five point lead. The Quinnipiac University/CBS News/New York Times poll that came out last week had him with a ten point lead.
No Republican has ever won the presidency without winning Ohio. Plus, whoever has won Ohio has won the last 11 presidential races. Ten point leads aren't small, they're gigantic.