Wyo. Stat. § 22-13-117: Announcement that polls will close; electors allowed to vote; proclamation of closing.

At 6:30 p.m. the judges of election shall announce that the polls will close in thirty (30) minutes. Electors present and waiting to vote at 7:00 p.m. shall be permitted to enter the polls and vote. No other elector shall be admitted to vote after 7:00 p.m. After all ballots are cast, the polls shall be declared closed by a judge of election making an official proclamation of closing.