A candidate needs 50% to avoid a runoff in TX primaries, so if conservatives vote for Medina it won’t lead to the RINO KBH beating the uninspiring Perry, but it could keep Perry from getting to 50% and throwing the race to a low-turnout runoff between Perry and KBH. Medina has no chance of making the runoff.
BTW, FWIW, Medina is an ally of Ron Paul.
I can live with that. Governors have no say over foreign policy.