In upcoming Miss. runoff, all eyes on tea-partys McDaniel
Video duration: 5:06
Primary elections took place in eight states last night. In Mississippi, a tea party challenger and six-term Senate stalwart head to a primary runoff. In Iowa, Republican frontrunner Joni Ernst won the majority vote against four competitors. For a closer look at the results, Judy Woodruff talks to political editor Domenico Montanaro.