Wyo. Stat. Ann. § 22-3-101
(a) Registration is required before a person may vote.
(i) Repealed By Laws 1998, ch. 100, § 5.
(ii) Repealed By Laws 1998, ch. 100, § 5.
(iii) Repealed By Laws 1998, ch. 100, § 5.
(b) Any voter legally registered prior to May 25, 1973, is considered registered under the Election Code enacted in 1973.