Short answer - I don't know yet.
Long Answer - I'm a small-L libertarian who is dissatisfied with both parties since both parties fundamentally are trying to expand government and take away freedom, just in different ways. The R's want to take away cultural and civic freedom and expand the military and surveillance state. The D's want to take away economic freedom and turn us all into dependent servants of an omnipotent social state.
However, I tend to regard the R's as the lesser evil, mostly because they're much less successful at accomplishing their goals. When the D's tell you they plan to steal your money, they usually follow through. When the R's tell you they plan to do something, there's a good chance nothing will come of it because they'll screw it up.
However, I evaluate Presidential candidates as individuals. And every cycle I tell myself that this time, I'm going to hold my nose and vote for the lesser evil. But as the election draws near, the reality sets in that I am in a single party state that will vote 60-65% for the Democrat no matter how evil that particular Democrat is. My state is not a swing state. So why vote for the lesser evil?
So instead I typically for Libertarian (big-L), even though I actually have alot of disagreements and problems with the big-L Libertarian Party. It's not so much that I think Gary Johnson (for example) was a good candidate...but compared to Trump or Hillary he was a rocket scientist. Even though he didn't know where Aleppo was despite it being in the news nonstop.
I suspect the same will happen again this cycle. If the Democrats nominate a sane person (ie not Sanders or Warren or Harris or Booker or Gillibrand etc), I'll tell myself that's who I'm voting for. If they don't, I'll tell myself I have to pick the lesser evil and vote Trump. But as the election gets closer, I'll probably end up voting for whatever windbag the LP trots out because my vote doesn't matter so I may as well vote for a 3rd Party.