Hillary picked up 2% more of the population. That doesn't say much. It didn't become less Republican. The moderates simply refused to vote for him. He actually got more supporters in TX. The only change is that Hillary did marginally better and GJ did as well.
Clinton got 43% of the Texas vote. In 1996.
For that matter so did Dukakis. Heh.
The good thing is that opening up oil drilling and pounding the crap out of the earth will create jobs in energy production and those people will vote Republican.