Biden, Sanders vie for 352 delegates in Michigan, Washington, 4 other states
(UPI) -- Six states will vote Tuesday in Democratic presidential primaries, as former Vice President Joe Biden and Vermont Sen. Bernie Sanders fight for the delegate lead ahead of the national convention. A combined 352 delegates are up for grabs Tuesday after voting in Idaho, Michigan, Mississippi, Missouri, North Dakota and Washington. A week ago, Biden took over as the party front-runner after a dominating performance on Super Tuesday a week ago, when he won 10 states to Sanders' four […]