I think people are still mis-reading this if they want Texas to flip blue. Trump does not play well here particularly among Texas conservatives.
Texas has a strong libertarian streak to it's conservatism, which Trump is not playing well towards. Trade deals like NAFTA have been nothing but good for the Texas economy, so his hammering trade is going to hurt him here.
Texas also does not have the obsession with a border wall that most states too. Texas has generally had a more positive relationship with Mexico than most states, and Dubya helped that a lot. There are enough hispanics in Texas (San Antonio is majority hispanic, white people are less than 50% of the Austin population that pure raw hatred of hispanic people stealing jerbs doesn't really exist.
The major cities are increasingly liberal. Austin is obviously super extra liberal (78704 holla) . But San Antonio, Dallas and Houston are turning into liberal hotbeds of their own. The Texas suburbs are where Republicans murder dems. While affulent suburbs of other cities are competitive, they are pure unadulterated republican hot beds in Texas. Suburban Texas conservatives see themselves as more socially conservative Rockefeller republicans though. Small government, low regulation and just a slight distaste for minority groups. The Trump platform is basically "fuck small government, but extra fuck minorities". Texas conservatives are primarily interested in the government fucking itself and doing very little. And while racism is a massive problem here, the state isn't full of disenfranchised white voters who have few prospects for replacing income lost decades ago that is blamed on globalization or minorities undercutting them.
Also, the Texas Democratic party is a fucking joke and is in no position to help the national party let alone statewide elected officials. Even when they manage to recruit a decent candidate they get stomped.
This number is an outlier. As much as I want Texas to turn blue, I think people need to realize that it is a conservative state, even with minority voters, probably as a result of the Texas Republican party generally being more favorable to the hispanic population vs. the national party.