Vice President Joe Biden campaigns today at Wright State University in Dayton, while Republican VP candidate Paul Ryan heads to the Clermont County Fairgrounds east of Cincinnati. The Obama campaign says the president will return to Ohio next Monday with stops in Columbus and Cincinnati. Republican presidential nominee Mitt Romney campaigned in Mansfield two days ago. Polls have indicated a tight race with Obama slightly ahead in the swing state, considered likely to be crucial to Romney's chances of unseating him. Obama carried Ohio in 2008, after George W. Bush won Ohio twice.