Section R. 423.148 - Observers and challengesRule 148.
(1) The parties to the election may each designate a representative, but not a supervisor or full-time labor organization representative unless by mutual agreement of the parties, to observe that ballots are properly cast and votes properly counted. Observers are subject to such reasonable limitations as the election agent may prescribe.(2) An authorized observer, the commission, or the election agent, before the time the voter's ballot is cast, or before the time the ballots are counted in the case of a mail ballot election, may challenge for good cause the eligibility of any person to participate in the election. A person challenged as an ineligible voter shall be permitted to vote in secret, and the election agent shall set aside the ballot, with appropriate markings. If it is determined by the commission or its election agent that the challenged ballot, or ballots, is decisive of the result, then the commission shall determine the merits of any challenged ballot and decide whether or not the person is an eligible voter.Mich. Admin. Code R. 423.148