First lady Michelle Obama is greeted before the start of the third presidential debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Pool-Michael Reynolds)

Photo by: Michael Reynolds

First lady Michelle Obama is greeted before the start of the third presidential debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Pool-Michael Reynolds)