Biden and Sanders face off in six key states with 352 delegates up for grabs

The stakes are high for Joe Biden and Bernie Sanders as six states hold primaries today. Democratic contests are underway in Washington state, Idaho, North Dakota, Michigan, Missouri and Mississippi. CBS News political correspondent Ed O’Keefe reports from Detroit while CBSN political reporter Caitlin Huey-Burns joins CBSN on set to discuss the latest developments. Source