27 10/3/12 US President Barack Obama steps off Air Force One on October 3, 2012 upon arrival at Buckley Air Force Base in Denver, Colorado. Obama is in Denver, Colorado for the first presidential debate. MANDEL NGAN/AFP/GettyImages
Photos: President Barack Obama speaks at Sloan's Lake Park in Denver
430 Obama courts female voters, accuses GOP rival Romney of suffering from a case of ‘Romnesia President Barack Obama stretches to shakes hands with supporters after speaking about the choice facing women in the upcoming election, Friday, Oct. 19, 2012, at a campaign event at George Mason University, in Fairfax, Va.
120 10/21/12 - 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))
Barack Obama, Mitt Romney spar in second presidential debate
88 Barack Obama, Mitt Romney spar in second presidential debate Barack Obama, Mitt Romney spar in second presidential debate Tuesday, October 16, 2012 11:08 PM Plain Dealer wire services By Plain Dealer wire services Follow President Barack Obama, left, and Republican presidential nominee Mitt Romney confront each other during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Pool-Win McNamee)
President Barack Obama and former Massachusetts Governor Mitt Romney wave to the audience at the start of the presidential debate Wednesday, October 3, 2012 at the University of Denver. Craig F Walker, The Denver Post