By Allan Stein PRESCOTT, Ariz.—One rally looked more like a catered banquet event on steroids, the other like a rock concert with all the hoopla of a religious revival meeting. One thing was sure: former President Donald Trump and his former Vice President Mike Pence were the stars at dueling rallies in the final days before the Arizona primary on Aug. 2. “I’m a Christian, a conservative, and a Republican—in that order—and I’m here because Arizona—and America—needs Karrin Taylor Robson as the next governor of Arizona,” Pence said at an event for Robson held at…