Omnibus Election Code
Section 220. Documents and articles omitted or erroneously placed inside the ballot box. - If after the delivery of the keys of the ballot box to the proper authorities, the board of election inspectors shall discover that some documents or articles required to be placed in the ballot box were not placed therein, the board of election inspectors, instead of opening the ballot box in order to place therein said documents or articles, shall deliver the same to the Commission or its duly authorized representatives. In no instance shall the ballot box be reopened to place therein or take out therefrom any document or article except to retrieve copies of the election returns which will be needed in any canvass and in such excepted instances, the members of the board of election inspectors and watchers of the candidates shall be notified of the time and place of the opening of said ballot box: Provided, however, That if there are other copies of the election returns outside of the ballot box which can be used in canvass, such copies of the election returns shall be used in said canvass and the opening of the ballot box to retrieve copies of the election returns placed therein shall then be dispensed with.