An audit is throwing Zohran Mamdani's 2025 New York City mayoral race into question. According to a RealAmerica Vote report, 23% of the ballots cast in the race that made Mamdani mayor came from voters with unverifiable identities, invalid Social Security numbers, or non-New York City addresses — a finding that, if it holds, would put nearly one in four ballots in the election under a cloud.
The claims go to the heart of how the 2025 race was run. Ballots tied to identities that could not be verified, Social Security numbers that were not valid, and voters registered at addresses beyond the five boroughs are exactly the categories election-integrity advocates have warned about for years. According to the report, they were not isolated errors or a handful of bad registrations — they added up to a share of the vote large enough to demand answers from the officials who ran the election.
"23% of ballots came from voters with unverifiable identities, invalid Social Security numbers, or non-New York City addresses."
Mamdani, a democratic socialist state assemblyman from Queens, stunned the city's political establishment by winning the 2025 Democratic primary and then the general election. He took office on January 1, 2026, as the city's first Muslim mayor, its first South Asian mayor and its first African-born mayor, carried into City Hall by a grassroots affordability campaign built on promises including a rent freeze and free buses. The race was one of the most watched in the country — which makes a report questioning the ballots behind it a national story, not just a New York one.
Since taking office, Mamdani has governed as one of the Trump administration's most visible opponents in city government, clashing repeatedly with Washington over immigration enforcement. Just this month, he led more than 100 elected officials in urging private parking lot and garage owners across the five boroughs not to let ICE use their properties as staging areas. The audit's findings now hand his critics an entirely new line of attack — not against his policies, but against the legitimacy of the vote that put him in office in the first place.
The report also lands in the middle of a national fight over voter rolls. The Trump administration has moved aggressively on election integrity this cycle, and on Monday the Justice Department asked a federal court to stop California from counting ballots cast by more than 20,000 registrants the administration says are likely noncitizens, after charging 28 people there with illegal voting or registration. A report claiming that 23% of ballots in America's largest city were cast by voters who could not be verified makes the same argument on a far bigger stage: that the rolls themselves cannot be trusted.
What happens next depends on whether election officials can answer the report's claims, ballot category by ballot category. For now, the audit stands as the most direct challenge yet to the result that made Mamdani mayor — and it leaves the city with a question it cannot afford to leave hanging: who actually voted?