[contentcards url=”https://nypost.com/2025/06/24/us-news/andrew-cuomo-concedes-as-zohran-mamdani-wins-nyc-mayoral-primary-in-stunning-upset/” target=”_blank”] By Craig McCarthy, Hannah Fierick, Matthew Fischetti and Matt Troutman Dark-horse socialist candidate Zohran Mamdani staged a stunning upset Tuesday night by knocking…