Jill Biden, center, wife of Vice President Joe Biden, sits with her sons Beau Biden, left, and Hunter Biden, right, before the start of the vice presidential debate, at Centre College in Danville, Ky. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

Jill Biden, center, wife of Vice President Joe Biden, sits with her sons Beau Biden, left, and Hunter Biden, right, before the start of the vice presidential debate, at Centre College in Danville, Ky. (AP Photo/Pablo Martinez Monsivais)