President Barack Obama, left, casts his vote during early voting in the 2012 election Thursday, Oct. 25, 2012, in Chicago, at the Martin Luther King Community Center. (AP Photo/Pablo Ma

 

              President Barack Obama, left, casts his vote during early voting in the 2012 election Thursday, Oct. 25, 2012, in Chicago, at the Martin Luther King Community Center. (AP Photo/Pablo Ma
President Barack Obama, left, casts his vote during early voting in the 2012 election Thursday, Oct. 25, 2012, in Chicago, at the Martin Luther King Community Center. (AP Photo/Pablo Martinez Monsivais)