Sunday's U.S. Presidential debate was the most-tweeted debate in Twitter's ten-year history， said.
sent more than 17 million debate-related tweets during the 90 minute debate.
Highly Anticipated Debate
The second presidential debate between Democrat Hillary Clinton and Republican Donald Trump was held at Washington University in Saint Louis.
Officials at the school in the state of Missouri held a lottery for seating. More than 10，000 students applied; hours before the debate began.
Two days before the debate， about women.
way; they did not shake hands when they appeared in front of the audience. In general， American presidential candidates shake hands before beginning a debate. The two did shake hands after the debate ended.
Supporters of Trump and Clinton posted their opinions about the tense greeting under the hashtag #nohandshake.
The candidates shook hands before their first debate.
， a critic of Clinton， she is responsible for the death of American citizens who were in Benghazi.
， a critic of Trump， about women in a video.
One of the first questions of the debate addressed the video of Trump. The candidate defended his words by saying "I don't think you understand what was said at all. This was locker-room talk. I'm not proud of it."
Locker- harsh or sexually offensive in nature.
， former president Bill Clinton. Trump said that Bill Clinton did "far worse."
of a private email system while she led the State Department. He added that if he were elected， he would instruct a government investigator to look into the issue.
This statement became one of the top three most- to Twitter.
were not true.
said there was no reason to bring charges against her.
several foreign and domestic policy issues， called Obamacare.
Both candidates called for creating safe zones in Syria. Safe zones are areas where civilians can be kept safe during war.
Trump said he disagreed with his running mate， Governor Mike Pence， about Syria. Twitter said this statement became the most tweeted moment in the debate.
Trump and Clinton also debated the future of President Barack Obama's healthcare law， The Patient Protection and Affordable Care Act.
Clinton admitted the law had problems， give coverage to their employees.
in every state.
The two candidates will hold their final debate on October 19th.