Biden closes in on Democratic presidential nomination

Eight states and Washington D.C. held primaries on Tuesday in what was the biggest day of voting since Super Tuesday in March. After a slew of wins, Joe Biden is now closing in on the number of delegates he needs to formally clinch the Democratic nomination. CBSN political reporter Caitlin Huey-Burns joins “Red and Blue”‘s Elaine Quijano to break down the results. Source