May 15 Party Declaration for Primary Deadline Last day to declare or change party affiliation for August primary. New voter registrations not impacted. W.S. 22-5-214(a)
August 19 Minor Party Candidate Filing Deadline Certification of Minor & Provisional Party candidates to Secretary of State or County Clerk. W.S. 22-4-304(c)
August 19 - November 23 WyoCP Candidate Vetting Deadline According to our State Bylaws this is the last day that candidates can be vetted.