(3) Where political parties entrust their primary election management pursuant to paragraph (1), specific procedures and necessary matters shall be determined by the National Election Commission Regulations. Article 57-5 (Prohibition from Buying Party Members) (1) No one shall offer any money and goods, property interests or private or public post, or expressing the intention of offering any of them to any elector in a primary election (referring to a person who is entered in the official list of electors in the primary election) or his or her spouse, lineal ascendant or descendant with the aim of helping him or her win his or her candidacy or preventing him or her from wining the candidacy in the primary election, irrespective of the former's pretext: Provided, That the same shall not apply to any customary act that is prescribed by the National Election Commission Regulations. (2) No one shall perform the act of offering the benefits, etc. referred to in paragraph (1) to any candidate (including anyone who intends to become a candidate; hereafter in this paragraph, the same shall apply) with the aim of preventing him or her from becoming a candidate in the primary election or getting him or her to renounce his or her candidacy and every candidate shall not accept the offer of any benefits and any post or approve the intention of offering such benefits and such post. (3) No one shall direct, induce or coerce to perform the act referred to in paragraphs (1) and (2). Article 57-6 (Prohibition against Primary Election Campaigns by Public Officials) (1) No one, who is not allowed to carry out an election campaign under Article 60 (1), may conduct a primary election campaign: Provided, That this shall not apply to cases where any one eligible to be a party member in a primary election, in which only affiliated party members can participate, conducts a campaign. (2) No public official may conduct a primary election campaign using his or her status. [Previous Article 57-6 moved to Article 57-7 <Jan. 25, 2010>] Article 57-7 (Raising of Objection to Entrustment of Primary Elections) Where any political party entrusts the holding of its primary election pursuant to Article 57-4, any objection to the effects of the primary election and selection shall be raised to the relevant political party. <Amended on Jan. 25, 2010> [Moved from Article 57-6 <Jan. 25, 2010>] Article 57-8 (Provision of Virtual Phone Numbers for Primary Elections) (1) Where a political party that has seats in the National Assembly falls under any of the following cases, it may request a mobile network operator in writing (hereinafter referred to as "written request for providing virtual phone numbers") to provide numbers created to prevent mobile phone numbers of users from being exposed (hereinafter referred to as "virtual phone numbers") via the competent election commission: <Amended on Feb. 8, 2017>