Trump isn't going to win Nevada, and a win in NC will only be by the wispy hairs on his ass.
Latino Decisions has NV at 70-14 Clinton with Hispanics. Once you plug that into the Fox poll instead of their ridiculous 46-36 margin it becomes more believable.
Fox's North Carolina poll was 75% white after doing the math on the back of an envelope. I trust PPP there (tied to a VERY narrow Trump lead). They have the correct demographic sample in their home state.
Ohio I believe is a Trump lead but is the electorate really going to be 86% or 87% white? That's the number I came up with after doing the back-calculations. 80% white and 20% non-white is more probable