FILE - Democratic presidential nominee Hillary Clinton smiles as Republican presidential nominee Donald Trump speaks during the presidential debate in Hempstead, N.Y., Sept. 26, 2016. (Rick T. Wilking/Pool via AP, File)
FILE - Democratic presidential nominee Hillary Clinton listens as Republican presidential nominee Donald Trump answers a question during the presidential debate in Hempstead, N.Y., Sept. 26, 2016. (Joe Raedle/Pool via AP, File)
FILE - Republican presidential nominee Donald Trump, left, and Democratic presidential nominee Hillary Clinton speak during the second presidential debate in St. Louis, Oct. 9, 2016. (AP Photo/John Locher, File)
FILE - Democratic presidential nominee Hillary Clinton listens to Republican presidential nominee Donald Trump during the third presidential debate, Oct. 19, 2016. (AP Photo/David Goldman, File)
FILE - Republican presidential nominee Donald Trump, left, and Democratic presidential nominee Hillary Clinton shake hands after the presidential debate in Hempstead, N.Y., Sept. 26, 2016. (AP Photo/David Goldman, File)
FILE - Democratic presidential nominee Hillary Clinton, right, speaks as Republican presidential nominee Donald Trump listens during the second presidential debate in St. Louis, Oct. 9, 2016. (Rick T. Wilking/Pool via AP, File)