I couldn't tell you. More importantly, when was the last time a Democrat won a statewide race in Texas? Over 20 years ago (1990, I believe). This pattern is unlikely to change anytime soon and I'm not expecting Hubbard to win - that would be absurd. None-the-less, I would much rather lose an election by 15+ points with a candidate that I respect than lose one by 10-15 points with a candidate I didn't much care for.
And i don't care about losing at all. Neither - about parties or - rigid ideologies. I DO care about winning. And if to WIN requires a more conservative candidate - i will gladly support him.
To each their own; but I could care less about party majorities if the ideology of that said majority is out of tune with what I believe in. Either way, your point is somewhat moot because you're basis is that there is a candidate available with the potential to win. Either Sadler or Hubbard is going to get ran over by either Dewhurst or Cruz. It's just a matter of what issues you want brought to the table, and I prefer Hubbard's message to Sadler's despite the fact that he would likely do 2-3 points worse.