A Mamdani-backed progressive’s challenge to a veteran Democrat highlights party fractures

By David Wright, CNN (CNN) — The divides between the Democratic old guard and a new class of progressive challenger were on sharp display on Tuesday night as a congressional candidate in New York’s 13th District apologized for past disparaging remarks about Kamala Harris. “To Vice President Kamala Harris, I sincerely apologize,” Darializa Avila Chevalier,