Abdul El-Sayed, a progressive epidemiologist, won Michigan's Democratic Senate primary, defeating Representative Haley Stevens. He will face Republican Mike Rogers in the November midterms.
El-Sayed's platform includes Medicare for all, higher taxes on billionaires and corporations, an end to military aid for Israel, and a rejection of corporate money in politics. His victory was narrow, and many in the party establishment worry about his chances in the fall, believing a more moderate candidate might have been stronger.
He has since spoken with former President Barack Obama about unity, as he works to win over wary Democrats.
The result reflects a growing leftward shift among Democrats, though the tight margin underscores concerns about electability. Michigan was one of five states holding primaries.