The only way that could happen in the near future would be the result of Republicans in Congress being essential to the establishment of "gay marriage," or maybe a "pathway to amnesty." Because then the strong Conservative base in Texas (and I mean STRONG) might just give the GOP the finger and stay home, you know?
Oh... wait...
Obama had the highest percent of the vote by a dem candidate since LBJ yet he still lost TX (both times) by roughly 15 points.
No way TX turns blue for a longggg time.