Mississippi Sen. Thad Cochran (center) may have scored the equivalent of a winning political touchdown in the Republican primary last month, but Chris McDaniel, who lost, still wants to see the replay. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP

Polls give Chris McDaniel the advantage going into Tuesday's runoff for Mississippi's GOP Senate nomination. His 2-year-old son helped rally supporters in Madison, Miss., on Thursday. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP