In a first, a ballot initiative to divest from Israel has won

A municipal ballot proposal to divest from Israel went before a popular vote for the first time on Tuesday — and pulled off a decisive victory.

Question 3 won more than 55 percent of the vote in unofficial election results in the Boston suburb of Somerville, Massachusetts, as the Israel-divestment movement saw the elevation of its most well-known proponent in politics — Zohran Mamdani — to mayor of New York City.

Local pro-Palestinian activists claimed victory, with Somerville for Palestine — the group that gathered the signatures required to put the non-binding resolution on the ballot — post...