Trump was involved in 64 percent of all debate-related tweets, Twitter said.
Twitteradded that Saturday was the second most tweeted day of the election due to the disclosure of a video of Trump's sexist comments about women. More than 8 million tweets were sent about Trump. The most tweeted political event at the time of publication was the first presidential debate on Sept 26.
Facebook said the top moment on its platform during the first half of Sunday night's debate was Trump's retort to Clinton when she said it's good someone like him isn't in charge of the law. "Because you'd be in jail," he interjected.