DAY 504: Primary night in seven states

<p>Polls are closed on a critical primary day across the United States. Just ahead of the first public Jan. 6th hearings, more information comes out on what to expect. Plus, Uvalde native and actor Matthew McConaughey gives a powerful and emotional plea for stricter gun safety at the White House. James Carville, Tim Miller, Eugene Robinson, Mark McKinnon, and Steve Kornacki join. </p>