The polling board shall inspect the ballot box in the presence of the first voter to arrive at the polling station. The inspection results shall be noted on the control ballot, which shall be signed by the members of the polling board and the voter first to arrive at the polling station.
The control ballot shall be placed in the ballot box, after which the box shall be sealed and this shall be entered in the minutes of the polling board activities.
The first thing upon opening the ballot box shall be verifying the existence of the control ballot. Should there be no control ballot, the polling board shall be dismissed and a new one appointed, and voting at that polling station shall be repeated.
The Federal Electoral Commission shall prescribe the form of the control ballot and the way of sealing of the ballot box.