Well?

Hillary - Socially liberal, economically restrictive
Trump - Socially conservative, economically moderate
Jill Stein - Socially liberal, economically moderate, pro-environment
Gary Johnson - Socially liberal, economically liberal

These are the only four candidates who shall appear on the ballot in enough states to win (Hill/Trump/Johnson in all 50 states + DC, Stein in ~30 states)

Johnson is projected to have the best showing for the Libertarian party in its history, out-performing his 2012 run which got 1.4 million votes.

If it comes down to these four then I'm voting Hillary. Reluctantly.

Trump is an idiot and the rest of the candidates don't have enough support to win, so voting for them is useless.

Ideally Cruz or Rubio would get the Republican nomination, so I could decide whether they or Hillary are better.

Johnson can win if the same thing that happened to Bernie happens to him

60% of the voting population is ideologically libertarian according to multiple polls Just since they haven't had support in the past, it's hard to get support in the future.

NOT Trump