If a dispute arises in an election concerning the eligibility of a particular employee to vote therein, the ballot of the employee may be challenged by the board agent conducting the election or an authorized observer. Each challenged ballot shall be placed in an individually marked envelope. If the challenged ballots are necessary for a final determination, the board may hold a hearing upon due notice, and shall decide the eligibility of the employee.
Haw. Code R. § 12-43-207