NV is a Dem state now. It has flipped on ex-Californian Blacks and Latinos.
I don't think Nevada's a lost cause. The black population isn't that large and their economy is a disaster. The migration from California has greatly slowed. Nevada will probably not gain another house seat in 2020
Nevada and New Mexico are lost causes. The Latino population makes it very very unlikely to go Romney. He hasn't lead in a Nevada poll since 2011. He needs to focus his money on Colorado, Florida, Virginia, Ohio, Iowa, and New Hampshire.