Wyo. Stat. § 22-11-109: Post election audit.

The county clerk shall conduct a random audit of ballots by processing the preaudited group of test ballots as described in W.S. 22-11-104(b)(iii) on five percent (5%) of the automated tabulating equipment for that county, but on not less than one (1) machine, within thirty (30) days of any election in which the tabulating equipment was used.