SD,  I have read somewhere that party affiliation in early voting years is like imprinting.  This doesn't speak well for republicans.  The numbers add up to 89%.  Even if we give future republicans the missing 11% and Trump's 9% that puts them slightly ahead of the Greens and slightly behind the Libertarians.  The democrats should be feeling pretty good right now.  Emphasis on "right now".  I wonder what would happen if we found these same young people and asked them, "What party you would support and affiliate with in the future?"

a) Libertarian
b) Green
c) Independent/non-affiliated
d) democrat
e) republican

That poll would be even more interesting if combined with your poll.  For me personally, the goal is to build a competitive Libertarian Party that has the ability to bargain and form coalitions with other parties to advance the Libertarian agenda.  Winning the White House would be fun but I suspect it will be a lot like being a Chicago Cubs fan.

Vote Libertarian!