Mickey Mouse could beat Perry, not that the GOP nom stands a chance given the changing demographic ... once was a time, 13 years ago, and then with help from Osama bin Laden, 9 years ago, the GOP could eke out a thin win. But not any more. The paths to Electoral College majority, for the GOP, are becoming fewer and fewer, and more and more remote (absurd wishful thinking), to very near the point of zero paths. So to be president, win the Dem Nom. Easy as that.
If that were not the case, then I'd urge the GOP to stop nominating Texas Governors, since they don't really run anything. Hell; the Speaker has more power, and possibly even the Lt. Governor. Texas is odd in that regard, since framers of its constitution feared too much power in one individual. Being Texas governor is a beauty contest, and little more than that. Plus all the stuff they take credit for, was done by others, or it would not happen in Texas.
Simple truth.