(1) Some of the special districts authorized to conduct elections using the mail ballot procedure require votes to be cast and/or counted in proportion to property ownership or some factor other than one vote per person. When such is the case, the election administrator shall:

(a) make a determination as to whether the particular proportional voting requirements can be satisfied using the mail ballot procedures; and

(b) if so, include in the written plan the specific methods and procedures which will be used to implement the statutory requirements for proportional voting in that election.