As I said, he is not going to campaign against his own Lt Gov.
When there is a better senatorial candidate he should. But I understand Perry offers little resistance on issues. Like when he went along with Texas' Dream Act. Oh wait, he enthusiastically supported that. Ok, how about when he attacked the Texas legislature for overriding his nanny-state EO on Ghardasil. He showed a backbone there! Why can't he do that when it comes to defending conservative issues or candidates? Nevermind, I already know the answer.