Current Ohio returns show Mitt Romney leading Rick Santorum by a 43%-35% margin, with returns from both metro and non-metro counties. This website allows you to look at county returns. No surprise that Romney is running well ahead in Cleveland's Cuyahoga County, Lake County just to the northeast and Columbus's Franklin County. But Romney is also leading in the southwest, in Dayton's Montgomery County and in Butler County, home of Speaker John Boehner. This looks pretty favorable for Romney--but it's close.