Here are five takeaways from New York City’s second experience with ranked-choice voting, and how it helped Zohran Mamdani secure a decisive victory.

In the final round, Mamdani picked up 99,069 additional votes from his eliminated challengers, nearly double the 53,493 votes gained by Cuomo in the tabulation. The strong showing is likely a result of the heavily-promoted “Don’t Rank Cuomo” strategy which urged voters to leave him off their ballot entirely.

New York City is using ranked choice voting in its Democratic mayoral primary election. Here's how it works: Rather than pick just one candidate, voters get to rank several in order of preference.