Obama Has Edge in Ohio

A new Gravis survey in Ohio shows President Obama edging Mitt Romney, 45% to 44%.

Nate Silver: “A one-point lead isn’t much, and Mr. Obama has gotten some better numbers than that in Ohio. So why does this qualify as good news for him? Because this firm has had Republican-leaning results in the other states that it has polled, putting Mr. Romney up by 2 points in Florida, 1 point in Colorado and 17 points in Missouri, making it several points more Republican-leaning than the consensus of surveys in those states. Once the model adjusts for the firm’s “house effect,” it treats Mr. Obama’s nominal 1-point lead as being the equivalent of a 4- or 5-point lead instead. Thus, Mr. Obama’s chances of winning Ohio rose somewhat based on the survey.”