Sort of mixed stuff here. I doubt it will have much of an effect in Idaho or Washington where the states are pretty safe on a Presidential level, however the effect on Nevada or Colorado is huge.
Actually you have to understand that people of different mentalities move to different states. Olds who are more liberal and into gambling might move to Nevada. Also those who serve them by working in the service industry, making the state atlas red. On the other hand Arizona attracts conservative retirees who don't like Mexicans but like golf. Idaho also attracts those who are already conservative or racists who want to get away from Mexicans.
Do you think that all the conservatives who migrate there move there because they hate Mexicans? I have no idea if this is true but I would think its more of a democratic conspiracy than an actual fact. I don't think they dislike Mexicans in general, but I think they don't like the illegal Mexicans crossing the border with our broken immigration system.
Many don't like the fact that half of SoCal is Hispanic now, most of them being native born citizens. Doesn't matter to these folks, who will use the illegals argument to hide their hate.
So California republicans are racist, yet another race-blaming game.
That's what Democrats do. They don't have any positions on the issues so they just play the race card.
Republicans never play the race card, they prefer to just disenfranchise minority voters altogether.