Are you breaking this down by primary/GE preference/voting? Like supported Obama in the primaries then voted Baldwin?
I really doubt that happened much if at all. Trump/Johnson is probably a likely subset though, after tiring of Trump's shenanigans.
I'm Paul/Baldwin '12/McAfee/Johnson '16.
So a Paul/Baldwin/Trump/Johnson would be a right-leaning libertarian that thinks we need immigration control, not open borders (at least temporarily) and probably doesn't want the wall built (boondoggle).
Addition: This person would also be a gun-owner/enthusiast that isn't enthused about Trump's half-ass regard for the 2nd amendment.
I should have clarified that I'm talking about the general election for all candidates, and that I mean Ron Johnson, not Gary Johnson.