Elections for an office defined in 21-A M.R.S.A. §1, sub-§27-C will be determined by the ranked-choice voting process described in these rules when there are three or more candidates who have qualified to be listed on the ballot for that office or when there is a combination of at least two candidates who have qualified to be listed on the ballot for that office plus at least one declared write-in candidate.
29- 250 C.M.R. ch. 535, § 1