Steve Kornacki takes to the Big Board to break down the latest from the Pennsylvania primary races.
» Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc
About: MSNBC is the premier destination for in-depth analysis of daily headlines, insightful political commentary and informed perspectives. Reaching more than 95 million households worldwide, MSNBC offers a full schedule of live news coverage, political opinions and award-winning documentary programming -- 24 hours a day, 7 days a week.