Utah is fool's gold for Clinton.
Yes, there's no way she wins the state. 88% of Democrats are already decided for her, almost all those undecided voters will be Trump voters by November.
Unless Romney endorses Johnson and campaigns hard for him in Utah.
How likely is a Republican establishmentarian going to endorse an actual libertarian who has directly contrary views on foreign policy and social issues. How likely are Mormons going to vote for someone who has no shame in smoking pot, supports gay marriage, abortion, etc? I don't see something substantial happening other than protest votes.
If undecideds stay home, he'll still win, just by much less. Without 3rd parties this poll shows a 57/43 Trump win.