OXON HILL, Md. — Democrats on Saturday elected Ken Martin, the party leader in Minnesota, as the national chair, turning to a low-profile Midwestern political operative to coordinate their resistance to Donald Trump’s presidency.

Ken Martin, the head of the Minnesota Democratic-Farmer-Labor Party, was decisively elected chair of the Democratic National Committee on Saturday, beating a crowded field in the first round of voting to become the new face of a party struggling to find its footing during the second Trump administration.