I actually think it's more that the entire Cleveland/Akron/Canton metro as well as the Mahoning valley have stayed about the same as 2008, or in the case of this poll, has swung to Obama from 2008. Similar deal in SE Ohio but there aren't that many people there to make a difference. I think the Columbus area will be swinging back as much as the national average and perhaps Cincinnati as well.
But remember that suspiciously close WV poll last month? I think that points to the (weird IMO) Appalachia hypothesis.