https://mrchrisarnell.com/p/mamdani-candidates-descend-on-racesArnell’s Substack en2026-06-20T04:08:17+00:00Mamdani Candidates Descend on Races: Muslim DSA Radical Darializa Avila Chevalier, Co-Founder of Radical Columbia Group CUAD, Targets NY-13 Congress