My hunch is part of his strategy is to make a strong showing in order to be the VP candidate for a non white male nominee.
It's maybe unlikely the whole ticket will be, but there's also a good chance that the top of the ticket will be either non-white, non-male, or both.
Every year for some time people have been saying Texas will turn and it has not happened.
A little analysis here: https://www.texasmonthly.com/burka-blog/latinos-wont-turn-te...