U.S. Democratic presidential candidates Joe Biden and Bernie Sanders will campaign in the Midwest on Saturday, as the two prepare for a showdown in Michigan, Missouri and four other nominating contests next week.
Sanders, who was until recently the front-runner in the party's race to face Republican President Donald Trump in November, is trying to regain momentum after Biden received a rush of endorsements from party establishment figures following his strong 'Super Tuesday' showing this week.
He has ramped up attacks on Biden in recent days, including at a rally in Detroit on Friday night, where he criticized the former vice president's