Data guru Steve Kornacki is leaving MSNBC to stay with NBC News full-time, becoming the cable network’s first big exit as it severs its ties with 30 Rock. Famous for his friendly explanations of ...

Data wizard Steve Kornacki is moving from MSNBC to join NBC News ahead of the liberal cable network’s split from its parent company. Kornacki, the network’s data guru who has become a fixture of ...