Democratic presidential candidate Hillary Clinton walks to meet Republican presidential candidate Donald Trump at the start of the first presidential debate at Hofstra University. (Matt Rourke/AP)
Republican presidential candidate Donald Trump walks onstage to shake hands with Hillary Clinton during the first presidential debate at Hofstra University. (Evan Vucci/AP)
The stage at the first presidential debate between Democratic presidential candidate Hillary Clinton and Republican presidential candidate Donald Trump at Hofstra University. (David Goldman/AP)
Democratic presidential nominee Hillary Clinton shakes hands with Republican presidential nominee Donald Trump during the presidential debate at Hofstra University. (Julio Cortez/AP)
Donald Trump shakes hands with moderator Lester Holt as Hillary Clinton walks to her lectern during the first presidential debate at Hofstra University. (Evan Vucci/AP)
Republican presidential nominee Donald Trump gestures during the presidential debate with Democratic presidential nominee Hillary Clinton at Hofstra University. (Mary Altaffer/AP)
Republican presidential nominee Donald Trump and Democratic presidential nominee Hillary Clinton gesture during the presidential debate at Hofstra University. (Mary Altaffer/AP)
Democratic presidential nominee Hillary Clinton and Republican presidential nominee Donald Trump spar during the presidential debate at Hofstra University. (Joe Raedle/AP)
Republican presidential nominee Donald Trump gestures towards Democratic presidential nominee Hillary Clinton during the presidential debate at Hofstra University. (Rick T. Wilking/AP)
Democratic presidential nominee Hillary Clinton speaks during the presidential debate with Republican presidential nominee Donald Trump at Hofstra University. (Julio Cortez/AP)
Republican presidential nominee Donald Trump speaks on stage with Democratic presidential nominee Hillary Clinton during the presidential debate at Hofstra University. (Rick T. Wilking/AP)
Mark Cuban, center, sits in the audience before the first presidential debate between Hillary Clinton and Donald Trump at Hofstra University. (Matt Rourke/AP)
Former President Bill Clinton and Chelsea Clinton, daughter of Hillary Clinton listen during the presidential debate between Donald Trump and Hillary Clinton at Hofstra University. (Joe Raedle/AP)
Melania Trump, Ivanka Trump, vice presidential candidate Mike Pence, Karen Pence, retired Gen. Michael Flynn, and former New York Mayor Rudy Giuliani at the presidential debate. (Evan Vucci/AP)
Democratic presidential nominee Hillary Clinton shakes hands with Republican presidential nominee Donald Trump after the presidential debate at Hofstra University. (Joe Raedle/Pool via AP)
Former President Bill Clinton kisses Democratic presidential nominee Hillary Clinton as she and their daughter Chelsea Clinton greet supports during the presidential debate. (AP Photo/David Goldman)
Republican presidential nominee Donald Trump walks off the stage with his family following the presidential debate with Democratic presidential nominee Hillary Clinton. (AP Photo/Julio Cortez)
Democratic presidential nominee Hillary Clinton walks off the stage with her husband former President Bill Clinton after the presidential debate. (Joe Raedle/Pool via AP)
Republican presidential nominee Donald Trump, second from left, his wife Melania Trump, third from left, and family members appear on stage after the presidential debate. (AP Photo/Mary Altaffer)
Republican presidential nominee Donald Trump shakes hands with Democratic presidential nominee Hillary Clinton following the presidential debate at Hofstra University. (AP Photo/Patrick Semansky)
Presidential candidates Hillary Clinton and Donald Trump faced off for the first time at Hofstra University in Hempstead, N.Y. on Monday, Sept. 26, 2016.