Boehner represents one district in Ohio, even though he’s Speaker.
That said, I haven’t seen any polling on Boehner’s standing in the state. Doubt they would poll on that specific question.
Ohio has several Republican office holders statewide, and you can bet they are helping Romney/Ryan in every possible way. Kasich is Governor and Portman is one of the two Senators.
Have also read that State Treasurer Josh Mandel (ex-Marine) who’s running for the other Senate seat is very popular and may be helping draw people out to vote for him who will also vote Romney/Ryan.
Ryan was picked, in part, with Ohio in mind as well as Wisconsin. Everywhere in Ohio Ryan goes he mentions that he attended Miami of Ohio University and got his degree there. LOL
Their strategy is aimed strongly at the Upper Midwest, of which both Wisconsin and Ohio are part.
I agree that Ryan’s Miami University (Oxford) connections are a real selling point.
Miami U has tendrils in all of southwest Ohio counties in one way or another, and they are sitting right next door to Indiana, so there’s probably spillover there, too.