At any election, whether ordered by the board or held by consent of the parties, if the right of an employee to vote is challenged by the board, the agent or any party to the proceeding, the employee shall be permitted to vote, but the employee's ballot shall be sealed by him in a separate envelope provided for such purpose and the employee shall then deliver the envelope to the agent or person duly designated by the board or the agent to conduct the election, who shall deliver the challenged ballot to the board for determination, provided, if the challenged ballots are insufficient in number to affect the result of the election, no determination with respect to them shall be made.
Conn. Agencies Regs. § 31-101-15