FILE - In this Sept. 17, 2012 file photo, President Barack Obama arrives to speak at a campaign event at Eden Park's Seasongood Pavilion in Cincinnati, Ohio. This year, the presidential race may come down to an even narrower slice of the electorate than simply the nine states where both Obama and Romney are aggressively competing: Florida, Ohio, Virginia, Colorado, Iowa, Nevada, New Hampshire, North Carolina and Wisconsin. (AP Photo/Carolyn Kaster, File)