FILE - In this July 6, 2012, file photo, President Barack Obama speaks at Carnegie Mellon University in Pittsburgh, Pa. Republicans say Mitt Romney has a chance to win Wisconsin. Democrats backing Obama insist Arizona could come into play. But if television ads are any guide, the 2012 contest will be won or lost in just nine states that have seen an eye-popping $350 million in ads so far with few new targets of opportunity expected to emerge. (AP Photo/Susan Walsh, File)
