Wyo. Stat. § 22-9-115: Receipt by clerk; handling procedure.

(a) After an absentee ballot has been accepted by the clerk, it shall not be returned to the voter.

(b) The clerk shall place completed absentee ballot envelopes in a large precinct envelope for the precinct in which they shall be voted and keep custody of them until they are delivered to the polling place or the designated counting center. The clerk shall endorse on the precinct envelope the number of the district and precinct and the words "Envelope contains ballots of absentee qualified electors and shall be opened only on election day at the polls when the polls are open" and shall affix his signature, official title, and seal the envelope.