I think the national breakdown is usually closer to 40-40-20 conservative-moderate-liberal and I don't expect Ohio to be wildly different from this, certainly not enough that moderate and liberal are within four points.
Nationally, CNN exit polls in 2008 had it it at 44% moderate, 34% conservative, 22% liberal and in 2004, 45% moderate, 34% conservative, 21% liberal.
This poll might be slightly too liberal for Ohio, but it's probably also slightly too conservative as well. It could also be that moderates are apathetic being so far from the election and not responding to polls at the moment as much as liberals and conservatives.