Celebs have been trying for a decade. But it was a formerly niche Latin rapper who improbably cracked the code.

Analilia Mejia benefited from her steadfast opposition to ICE to win a district previously held by a moderate.

Former congressman Tom Malinowski concedes to Analilia Mejia in New Jersey’s Democratic primary for the U.S. House special election. Mejia, a progressive activist and former political director ...