US Presidential Race In Its Home Stretch

Supporters listen to Republican Presidential candidate Mitt Romney during a rally at the Veterans Memorial Coliseum in Marion, Ohio, October 28, 2012.

A protester walks in front of burning tires as they block a street in Libya's second city of Benghazi after the killings of two policemen. The fatal shootings of the two officers came just a day after the U.N. mission in Libya voiced "deep concern" over the near-daily violence plaguing the North African country, particularly the east.

A supporter listens to President Obama at a campaign event at Austin Straubel Airport International Airport in Green Bay, Wisconsin, November 1, 2012.

Obama supporters cheer at Austin Straubel International Airport in Green Bay.

Mitt Romney looks at his iPad on his campaign plane en route to North Canton, Ohio October 26, 2012.

Wearing a mask on Halloween, Carol Heye of Riverview, Florida, shows her support for Mitt Romney as he campaigns in Tampa, Florida.

Mitt Romney greets supporters as he campaigns at Integrity Windows, a window factory in Roanoke, Virginia, November 1, 2012.

Marine One with  President Barack Obama and New Jersey Governor Chris Christie on board view the storm damage around Atlantic City, New Jersey, October 31, 2012.

Vice President Joe Biden speaks at a campaign rally at the Municipal Auditorium in Sarasota, Florida, October 31, 2012.

An Obama supporter casts his ballot early at an outdoor ballot box in Denver, Colorado October 30, 2012.

Mitt Romney accepts relief supplies for people affected by Hurricane Sandy at a storm relief campaign event in Kettering, Ohio October 30, 2012.

A sign hangs on the wall at an "Obama for President" office in Denver, Colorado October 30, 2012.

A volunteer speaks on the phone at Ohio's campaign headquarters for Mitt Romney, October 30, 2012.