There were two questions going into Monday's GOP presidential debate, which was sponsored by CNN and the Tea Party Express. First, who would emerge as the victor in the battle between Mitt Romney​ and Rick Perry, the two Republican front-runners, over Social Security. Second, which candidates would elbow their way into the conversation? Perry Wins Battle Against Romney After Perry characterized Social Security as a "Ponzi scheme" in a debate last week in California at the Reagan Library, Romney tried to pounce on those comments by accusing Perry of trying to kill Social Security. Romney tried to depict Perry as...