Countdown to the first presidential debate of 2016 (15 images)

People enjoy a jumping balloon on the grounds of the first presidential debate at Hofstra University on September 26, 2016 in Hempstead New York. Republican Candidate for President Donald Trump will Debate Democratic Candidate for President Hillary Clinton tomorrow night before an estimated total audience that could be as high as 100 million viewers. Photo by John Angelillo/UPI

A cameraman stands in his position in preparation on the eve of the first presidential debate at Hofstra University on September 25, 2016 in Hempstead New York. Republican Candidate for President Donald Trump will Debate Democratic Candidate for President Hillary Clinton tomorrow night before an estimated total audience that could be as high as 100 million viewers. Photo by John Angelillo/UPI

A girl stands between a photo on a news truck of Donald Trump And Hillary Clinton on the eve of the first presidential debate at Hofstra University on September 25, 2016 in Hempstead New York. Republican Candidate for President Donald Trump will Debate Democratic Candidate for President Hillary Clinton tomorrow night before an estimated total audience that could be as high as 100 million viewers. Photo by John Angelillo/UPI

Television stations from around the world report in makeshift studios outside the hall where the first presidential debate between Hillary Clinton and Donald Trump will be held at Hofstra University in Hempstead, New York on September 26, 2016. A record audience of a 100 million is expected to tune into the debate moderated by Lester Holt. Photo by Pat Benic/UPI