see more

ST LOUIS, MO - OCTOBER 09: Republican presidential nominee Donald Trump shakes hands with Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Chip Somodevilla/Getty Images)

ST LOUIS, MO - OCTOBER 09:  Republican presidential nominee Donald Trump shakes hands with Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Chip Somodevilla/Getty Images)

see more

ST LOUIS, MO - OCTOBER 09: Republican presidential nominee Donald Trump looks at Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Saul Loeb-Pool/Getty Images)

ST LOUIS, MO - OCTOBER 09:  Republican presidential nominee Donald Trump looks at Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Saul Loeb-Pool/Getty Images)

see more

ST LOUIS, MO - OCTOBER 09: Democratic presidential nominee former Secretary of State Hillary Clinton (L) speaks as Republican presidential nominee Donald Trump looks on during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Saul Loeb-Pool/Getty Images)

ST LOUIS, MO - OCTOBER 09:  Democratic presidential nominee former Secretary of State Hillary Clinton (L) speaks as Republican presidential nominee Donald Trump looks on during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Saul Loeb-Pool/Getty Images)

see more

ST LOUIS, MO - OCTOBER 09: Democratic presidential nominee former Secretary of State Hillary Clinton (L) and Republican presidential nominee Donald Trump listen during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Saul Loeb-Pool/Getty Images)

ST LOUIS, MO - OCTOBER 09:  Democratic presidential nominee former Secretary of State Hillary Clinton (L) and Republican presidential nominee Donald Trump listen during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Saul Loeb-Pool/Getty Images)

see more

ST LOUIS, MO - OCTOBER 09: Republican presidential nominee Donald Trump (L) shakes hands with Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Win McNamee/Getty Images)

ST LOUIS, MO - OCTOBER 09:  Republican presidential nominee Donald Trump (L) shakes hands with Democratic presidential nominee former Secretary of State Hillary Clinton during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Win McNamee/Getty Images)