or her to assist in his or her voting. <Amended on Feb. 16, 2000; Mar. 12, 2004> (7) Except as provided for in paragraph (6), two or more persons shall not enter the same polling booth at the same time. (8) Methods of sealing and delivering ballot papers and procedures for marking on ballot papers and other necessary matters shall be determined by the National Election Commission Regulations. <Amended on Aug. 4, 2005> Article 158 (Early Voting) (1) Any eligible voter (excluding home voters and shipboard voters) may vote at an early voting polling station during the early voting period. (2) An eligible voter who intends to vote in early voting shall present his or her identification card at an early voting polling station to have his or her identity verified and then imprint his or her thumbmark or affix his or her signature electronically to receive a ballot paper. In such cases, the National Election Commission shall save part of his or her identification card as an electronic image file to verify the fact that a ballot paper has been issued to the relevant eligible voter and shall keep it until the closing hour of balloting. <Amended on Aug. 13, 2015> (3) The official in charge of early voting management shall print ballot papers for the relevant election with a ballot paper printer, affix his or her seal on the blank for “official in charge of early voting management”, and give a ballot paper to an eligible voter without cutting off the serial number, along with an envelope for return. (4) Upon receipt of a ballot paper and an envelope for return, an eligible voter shall enter a polling booth, choose one candidate (referring to one political party in cases of an election of proportional representation members of the National Assembly or an election of proportional representation members of local councils), put a mark in the corresponding column of the balloting paper, fold it on the spot so that no one can see the balloting, put it into the envelope for return, seal it, and then put the envelope into the early voting ballot box. (5) Notwithstanding paragraphs (3) and (4), the official in charge of early voting ballot box management may elect not to give an envelope for return to an eligible voter in an area specified by the National Election Commission Regulations. (6) The official in charge of early voting management shall transfer ballot papers after the closing of early voting each day during the early voting period or after the end of the early voting period, in the presence of early voting observers, in accordance with the following procedures: <Amended on Feb. 13, 2014; Mar. 26, 2021> 1. If ballot papers have been given for voting along with an envelope for return in accordance with paragraph (3) or (4), the early voting ballot box shall be opened, the number of early voters shall be counted, and then ballot papers shall be transferred to the competent postmaster to dispatch the ballot papers by registered mail. In such cases, the official in charge of early voting management shall