Likely Clinton. I don't see how Trump is a better fit for Nevada than Romney, since it not only has a large Latino population, but also a fairly large Mormon population. The Trump-friendly voters in Nevada probably already voted for Romney. If Nevada is threatening to go for Trump, Clinton is probably finished.
I agree with this analysis! If Romney couldn't win it, I really don't see Trump succeeding. But I did vote Lean Clinton, just because she is not as popular as Obama was 4 years ago when he ran. But I still expect Clinton to win the state, and I think Catherine Cortez Masto will be elected to the Senate. Joe Heck would do better in a midterm, and the race will still be closer than the presidential result, but I think Cortez Masto narrowly wins as well.