Tuesday’s congressional primaries in New York will put the power of super PACs to the test and gauge the sway of progressive challenger Zohran Mamdani. Voters in the Empire State’s 10 districts face a crowded field of incumbents and newcomers, each backed by varying levels of outside money. The outcomes will signal whether money‑intensive campaign structures can still dominate New York’s liberal electorate.

Campaign finance watchdogs have long warned that super PACs can tip local races by flooding ads and data operations. In the 2022 cycle, New York saw unprecedented spending from national liberal groups, prompting donors to question the return on investment. Mamdani’s grassroots fundraising model, built on small online contributions, offers a direct contrast to heavyweight-backed opponents.

Investors watching political risk will read the primary results for clues about future regulatory battles and corporate lobbying strategies. A strong showing for Mamdani could embolden firms that favor progressive climate and tech policies, while a sweep by PAC‑heavy incumbents would reassure donors betting on established networks. The Tuesday vote therefore serves as an early barometer for how money will shape New York’s policy agenda.