A Sankey diagram of the 2025 New York City Democratic Mayoral primary election ranked choice results as of July 15, 2025.
The top 3 vote recipients in the first round were Zohran Mamdani, Andrew Cuomo, and Brad Lander.
By round 3, all candidates were eliminated except Mamdani and Cuomo.
Mamdani won with 56.4% of the vote to Cuomo's 43.6%.
The number of Inactive Ballots at the end was just over 55 thousand – about 5% of the total votes originally cast.

Made with: SankeyMatic.com
Data Source: NYC BOE

Zohra Mamdani started with 469,602 votes
Andrew Cuomo had 387,118 votes initially
9 other candidates were eliminated in successive rounds, with their votes reallocated
Mamdani ultimately won with 56.4% of the final vote (573,123), while Cuomo ended with 443,208

Posted by Japanpa

5 comments

  1. Cuomo made it to the final round but couldn’t close the gap — Mamdani hit that voter preference jackpot.

  2. Sankey isn’t really appropriate here since you can’t say those individual voters flowed through each different election. This makes it appear that everyone who voted for an eliminated candidate continued to vote and the final two recruited no new voters.

  3. Free public childcare and free public transit is pretty good if come true.

  4. What is the rule that got so many candidates booted in the second round? I would have thought they’d be eliminated one at a time.

  5. Good visual. Ranked choice voting is awesome. If we had this everywhere it would likely free us from the two-party system that everyone hates.

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