You ever read some of the crazy shit lefites post on Reddit and their "blogs" - plus in the mainstream? They have been calling for decades for lefties from Cali, Illinois, New York, etc to move to less populated, more conservative areas in order to flip them and gain control. The lefties want all of Texas' reps, they want Texas' senate seats (bad enough with Cornhole, but at least he can be bullied or shamed into voting like a Republican from time to time)
The left coasties love Idaho because Idaho had cheaper properties, lower taxes, more freedom - but Idaho has fewer people total population than Harris County last I checked. It'll flip blue a lot faster than Texas, because of the sheer numbers needed to flip Texas. But be sure, Texas, Florida, Alabama, Georgia, Tennessee, Montana, Wyoming - all are targets for lefties to colonize.