N.Y. Elec. Law § 8-502

§ 8-502. Challenges; generally. Before his vote is cast at an election\nany person may be challenged as to his right to vote, or his right to\nvote by early mail, absentee, military, special federal or special\npresidential ballot. Such challenge may be made by an inspector or\nclerk, by any duly appointed watcher, or by any registered voter\nproperly in the polling place. An inspector shall challenge every person\noffering to vote, whom he shall know or suspect is not entitled to vote\nin the district, and every person whose name appears on the list of\npersons to be challenged on election day which is furnished by the board\nof elections.\n