Michigan’s primaries could be the Democrat Party’s biggest test yet. @​BillHemmer heads to the Big Board to break down the key matchups, what’s at stake, and h

Michigan’s primaries could be the Democrat Party’s biggest test yet. @​BillHemmer heads to the Big Board to break down the key matchups, what’s at stake, and how the results could shift the balance of power as radical candidates position themselves for potential midterm races. [▻](https://video.t…