(1) All employees whose names appear on the list certified by the board agent at the pre-election conference shall be eligible to vote.

(2) Either party may challenge a prospective voter for cause.

(a) For a mail ballot election, a ballot will be mailed to all certified and challenged voters.

(b) For an on-site election, any employee who wishes to vote, but whose name is not on the certified list, will be permitted to vote, but will be challenged by the board agent.

(3) A challenged voter shall be permitted to vote but the ballot shall not be counted. The ballot shall instead be sealed in a separate, unmarked envelope under the supervision of the board agent and inserted in a special identifiable form envelope to be held by the board pending determination of the eligibility of the challenged voter.