Donald Trump, 2016 Republican presidential nominee, stands during the second U.S. presidential debate at Washington University in St. Louis, Missouri, U.S., on Sunday, Oct. 9, 2016. As has become tradition, the second debate will resemble a town hall meeting, with the candidates free to sit or roam the stage instead of standing behind podiums, while members of the audience -- uncommitted voters, screened by the Gallup Organization -- will ask half the questions. Photographer: Andrew Harrer/Bloomberg via Getty Images
