By a 3 to 1 margin, voters opposed the opportunity to open the state’s highest governing document to its first large-scale rewrite since 1938.
The defeat was bolstered by a $3 million campaign from labor unions that feared a convention could lead to a rolling back of collective bargaining rights and pension benefits.
The constitutional convention question was one of three proposals to appear on every ballot in New York.
Voters also approved a measure allowing judges to strip elected officials and top appointees of their pension benefits if the official is convicted of a felony directly related to their job.
A proposal to create a forest land bank to streamline infrastructure projects in the Adirondacks and Catskills remained too close to call.