Zohran Mamdani has won New York City’s Democratic mayoral primary. A new vote count Tuesday under the city’s ranked choice voting system confirmed the progressive legislator’s stunning upset of former Gov.

Mamdani, who refers to himself as a democratic socialist, secured the Democratic Party nomination for mayor in a stunning upset of former New York Governor Andrew Cuomo. Now, top Democratic donors are concerned about what his win means for the future of their party, according to a report from The Hill.