Siku za mwisho za kampeni za uchaguzi wa rais Marekani

U.S. President Barack Obama talks with volunteers on a mobile phone in his campaign field office in Orlando, Florida, October 28, 2012.

Audience members watch a biographical video about Republican presidential nominee Mitt Romney at a campaign rally in Pensacola, Florida, October 27, 2012.

Republican presidential candidate and former Massachusetts Gov. Mitt Romney holds a football on the tarmac of Akron-Canton Regional Airport in Akron, Ohio, Oct. 26, 2012.

An Obama supporter chants "four more years" as U.S. President Barack Obama speaks during a campaign rally in Tampa, Florida, October 25, 2012.

Republican presidential candidate and former Massachusetts Gov. Mitt Romney greets supporters as he campaigns at the Pensacola Civic Center in Pensacola, Florida, Oct. 27, 2012.

U.S. President Barack Obama greets supporters during a campaign rally in Richmond, Virginia, October 25, 2012.

A supporter listens as U.S. President Barack Obama speaks during a campaign rally in Denver, Colorado, October 24, 2012.

Audience members listen as Republican presidential nominee Mitt Romney speaks at a campaign rally in Cedar Rapids, Iowa, October 24, 2012.

Republican presidential nominee Mitt Romney greets diners at First Watch cafe, where he picked up some food, in Cincinnati, Ohio, October 25, 2012.

Supporters wave flags as Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks during a campaign stop at the Koch Family Farm in Van Meter, Iowa, Oct. 9, 2012.

Republican presidential candidate, former Massachusetts Gov. Mitt Romney asks his staff for their food orders after stopping at Wendy's in Cuyahoga Falls, Ohio, Oct. 9, 2012.

Supporters cheer as President Barack Obama speaks at a campaign event at rainy Cleveland State University in Ohio, Oct. 5, 2012.

President Barack Obama greets people at West Side Market in Cleveland, Ohio, Oct. 5, 2012.

Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns with vice presidential candidate Paul Ryan in Fishersville, Virginia, Oct. 4, 2012.

President Barack Obama greets supporters at a campaign event in Desert Pines High School in Las Vegas, Nevada, Sept. 30, 2012.

President Barack Obama reaches over to greet supporters on the tarmac at JFK airport in New York, Sept. 24, 2012.

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, right, talks with his vice presidential running mate Rep. Paul Ryan on his campaign bus after a rally in Vandalia, Ohio, Sept. 25, 2012.

The crowd cheers as President Barack Obama arrives to speak at a campaign event at the Summerfest Grounds at Henry Maier Festival Park in Milwaukee, Wisconsin, Sept. 22, 2012.

Flags wave as Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at Pueblo Weisbrod Aircraft Museum in Pueblo, Colorado, Sept. 24, 2012.

President Barack Obama greets people gathered at the airport in Milwaukee, Wisconsin, after arrival for a campaign stop, Sept. 22, 2012.

Supporters cheer for Republican presidential candidate, former Massachusetts Gov. Mitt Romney as he campaigns in Pueblo, Colorado, Sept. 24, 2012.

President Barack Obama swings with an imaginary bat as he arrives on stage to speak at a campaign event at G. Richard Pfitzner Stadium in Woodbridge, Virginia, Sept. 21, 2012.

President Barack Obama greets people after speaking at a campaign event at Eden Park’s Seasongood Pavilion in Cincinnati, Ohio, Sept. 17, 2012.

Supporters listen as Republican vice presidential candidate, Rep. Paul Ryan, speaks at WestPac Restorations in Colorado Springs, Colorado, Sept. 6, 2012.

Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks with military veterans outside an event by the "New Hampshire Veterans and Military Families for Mitt" in Concord, New Hampshire, Sept. 6, 2012.

A delegate shows off her Barack Obama button in the convention hall before the Democratic National Convention in Charlotte, North Carolina, Sept. 3, 2012.