N.Y.C. Admin. Code § 10-151: § 10-151 Elections for non-public office or position.

a. It shall be unlawful to conduct any election for a non-public office or position on Friday after sundown, Saturday or Sunday in which members of the general public are eligible to cast a vote by virtue of the fact that they reside in a particular area of the city.

b. It shall be unlawful for any person to direct, mandate, supervise or assist in conducting any such elections.