Biden Broadens Path to Nomination With Win in Michigan, 3 More States

Democratic presidential hopeful former Vice President Joe Biden speaks, flanked by his wife Jill Biden, at the National Constitution Center in Philadelphia on March 10, 2020. Mandel Ngan/AFP via Getty Images

Former Vice President Joe Biden built a significant lead over Sen. Bernie Sanders (I-Vt.) in the Democratic primary race on March 10, scoring a key victory in the battleground state of Michigan and picking up wins in Missouri, Mississippi, and Idaho.

Sanders won North Dakota. The two candidates were toe-to-toe in Washington state with two thirds of the votes counted.