N.Y. Gen. Mun. Law § 771

§ 771. Registration of electors. No new registration of electors shall\nbe necessary in case of consolidation, but all elector registrations of\nthe component local government entities shall be transferred to the\nproper registration books of the consolidated local government entity,\nand new registrations shall be made as provided by law as if no\nconsolidation had taken place.\n