President Barack Obama shakes hand after speaking at a campaign rally at The Ohio State University, Saturday, May 5, 2012 in Columbus, Ohio . (AP Photo/Haraz N. Ghanbari)
Photos: President Obama Kicks off Campaign Rally in Ohio
Photos: President Obama Kicks off Campaign Rally in Ohio
President Barack Obama shakes hand after speaking at a campaign rally at The Ohio State University, Saturday, May 5, 2012 in Columbus, Ohio . (AP Photo/Haraz N. Ghanbari)