Versions of See prior versions of a law on LawServer 2023 Nevada Revised Statutes 293.269921 – Procedure for timely returning mail ballot; treatment of mail ballot when postmark cannot be determined; requirements for ballot drop boxes 2022 Nevada Revised Statutes 293.269921 – Procedure for timely returning mail ballot; treatment of mail ballot when postmark cannot be determined; requirements for ballot drop boxes 2021 Nevada Revised Statutes 293.269921 – Procedure for timely returning mail ballot; treatment of mail ballot when postmark cannot be determined; requirements for ballot drop boxes. [Effective January 1, 2022.]