Just a bit of anecdotal info...My dad lives in OH (Richland county). He and his retired buddies (about 15 old geezers in total) get together for bf and coffee every couple of weeks.
About 2/3 are democrats. We are talking generational dyed in the wool union members, mostly auto and steel unions.
They have always voted Democrat. However, this time, not one of them will be voting for the commie bastard (their words). Whether they will pull the lever for a Republican is questionable, but they will not be pulling it for Odumbo.
My wife's family lives in Springfield, OH. Same generational Democrats/Unions mentality and can't wait to pull the lever for NOT OBAMA this Nov. I'd say Ohio may go convincingly for Romney this time around.