During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images)

Republican presidential candidate Mitt Romney (L) and U.S. President Barack Obama talk to each other during a town hall style debate at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by Bruce Bennett/Getty Images)

Republican presidential candidate Mitt Romney (R) speaks during a town hall style debate with U.S. President Barack Obama (L) at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by Rick Wilking-Pool/Getty Images)

Republican presidential candidate Mitt Romney (L) and U.S. President Barack Obama greet each other at the beginning of a town hall style debate at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by John Moore/Getty Images)

The stage is set for Republican presidential candidate Mitt Romney and U.S. President Barack Obama to answer questions during a town hall style debate at Hofstra University in Hempstead, New York. (Photo by Bruce Bennett/Getty Images)

Republican presidential candidate Mitt Romney (L) and U.S. President Barack Obama (R) shake hands prior to the start of a town hall style debate at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by Spencer Platt/Getty Images)

U.S. First Lady Michelle Obama (L) and guests sit in their seats prior to a town hall style presidential debate at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by Bruce Bennett/Getty Images)

President Barack Obama waves to the audience prior to the start of a town hall style debate at Hofstra University October 16, 2012 in Hempstead, New York. (Photo by John Moore/Getty Images)

Republican presidential candidate Mitt Romney (R) and U.S. President Barack Obama (L) shake hands prior to the start of a town hall style debate at Hofstra University in Hempstead, New York. (Photo by Michael Reynolds-Pool/Getty Images)