Left-wing Democrats are on a winning run - but can they lure back crucial swing voters?

Democratic presidential hopefuls are on a roll, with a string of recent victories boosting their momentum in the primary season. However, a challenging test lies ahead as they head to Michigan, a key battleground state where their ability to win over working-class voters will be put to the ultimate test. Michigan's economy and demographics are closely aligned with those of other crucial states in the US, making it a crucial proving ground for any presidential candidate seeking to appeal to the nation's heartland. As the Democratic field converges on Michigan, one question remains: can they translate their winning formula into success among the state's working-class voters who have historically been a crucial constituency for Democratic candidates.

They have seen a flurry of recent wins, but Michigan will test their ability to win back working-class voters in crucial states.