That's the easy part. Fighting a war against the Democrats, the RNC and the GOPe is the challenge. Ted Cruz has it easier seeing as how he's coordinating with the Libs and GOPe.
As we have been repeatedly told, Cruz doesn't get along with the GOPee ('he isn't well liked, even by members of his own party in Washington'--that's even been used by Trump fans as a reason NOT to vote for him), and has fought the Liberals tooth and nail. I doubt there is any love lost between either group and Cruz.