2016 Postmortem

and I think you know that because it was widely reported.

Dissecting the Youth Vote
Americans under 30 years old leaned left in this election, but not to the extent that they have in the past.

Though voters ages 18-to-29 skewed liberal, more than a third did not: Fifty-five percent of young voters chose Clinton, down from the 60 percent that backed Obama in 2012, while 37 percent chose President-Elect Donald Trump.

http://www.theatlantic.com/education/archive/2016/11/dissecting-the-youth-vote/507416/

As the mother of a Millennial who was friends with about 60 of his Jambase hipster/artists types on Facebook - the amount of Hillary hate they spread around was nauseating and the comments were worse. Sanders surrogates like Killer Mike and others did a bang up job of driving down turnout in the minority communities. They hung on to conspiracy theories. fake news and the endless hateful memes featuring Sec. Clinton.