Ann Romney, top row, listens to her husband Republican presidential nominee Mitt Romney as he addresses members of the audience during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012. (AP Photo/Pool-Michael Reynolds)
Republican presidential nominee Mitt Romney, left, heads back to his seat after speaking during the second presidential debate with President Barack Obama. (AP Photo/Pool-Win McNamee)
President Barack Obama, foreground, and Republican presidential nominee Mitt Romney participate in the second presidential debate. (AP Photo/Mary Altaffer)
A member of the audience asks Republican presidential nominee Mitt Romney a question during the second presidential debate with President Barack Obama at Hofstra University. (AP Photo/Pool-Win McNamee)
President Barack Obama and Republican presidential candidate, former Massachusetts Gov. Mitt Romney, greet each other as they arrive for the second presidential debate. (AP Photo/Carolyn Kaster)
Moderator Candy Crowley, center, applauds as President Barack Obama, right, shakes hands with Republican presidential nominee Mitt Romney during the second presidential debate. (AP Photo/Pool-Michael Reynolds)
President Barack Obama, left, and Republican presidential nominee Mitt Romney speak to members of the audience during the second presidential debate. (AP Photo/Pool-Shannon Stapleton)
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)
Republican presidential nominee Mitt Romney and President Barack Obama spar during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)
Republican presidential nominee Mitt Romney and and President Barack Obama answer a question during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)
Republican presidential nominee Mitt Romney and President Barack Obama answer a question during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)
Republican presidential nominee Mitt Romney and President Barack Obama shake hands during the second presidential debate at Hofstra University, Tuesday, Oct. 16, 2012, in Hempstead, N.Y. (AP Photo/Charlie Neibergall)
Republican presidential candidate and former Massachusetts Gov. Mitt Romney speaks during a campaign rally, Sunday, Oct. 7, 2012 in Port St. Lucie, Fla. (AP Photo/Lynne Sladky)