The Wall Street Journal details Hillary’s problems with the youth vote:

The outreach comes as polls show younger voters moving away from Mrs. Clinton. Among those under age 35, Mrs. Clinton’s lead over Republican presidential rival Donald Trump fell from 24 points in late August to just 5 points this month in Quinnipiac surveys. That was one reason her overall lead among likely voters fell from 7 points to 2 points.
Similarly, Mrs. Clinton bested Mr. Trump by 27 points among voters under 35 in a Fox News survey in early August. That lead fell to 9 points in a new Fox News survey.
The trend is appearing in some state-level surveys, as well: In a new poll of Michigan voters, Mrs. Clinton’s 24-point lead among young voters a month ago fell to 7 points. That change helped account for why her 11-point lead among voters overall fell to 3 points in the survey, conducted for the Detroit Free Press and WXYZ.