The one thing Texas has going for it is the vast size of the state. Yes, Houston proper is liberal as all get out - but the burbs and East and West Texas are red as Santa's hat. There is no way some pinko commie is gonna get a pinko education from UTexas and move back out to Midland or Pecos or Laredo and convince the oilfield trash and the ranchers of the rightness of his position on share the wealth. As long as the folks in small towns and the suburbs keep their conservative opinions, the state won't be a total loss.
The libs tend to congregate in tight spots - so Houston and Dallas and Austin can't get any bluer - but they just pile on top of one another, because they aren't welcome anywhere else. They usually are invited to take their commie propaganda and hit the Greyhound station - in fact, that same article I quoted said that Texas send more people BACK to California than any other state. Just not as many as we take in, unfortunately.