(12) The competent constituency election commission shall make available to the public the documents submitted or received under paragraphs (4) 2 through 7 and (10) so that constituents can be informed thereof: Provided, That such documents shall not be made available to the public after the election day. <Newly Inserted on Mar. 7, 2002; Mar. 12, 2004; Feb. 13, 2014> (13) Deleted. <Aug. 4, 2005> (14) Deleted. <Aug. 4, 2005> (15) The application form for candidate registration, a form for letter of nomination for tax payment and declaration of default of taxes and the methods of offering documents that are submitted and delivered for public perusal and other necessary matters shall be prescribed by the National Election Commission Regulations. <Amended on Mar. 12, 2004; Aug. 4, 2005; Jan. 25, 2010> Article 50 (Prohibition from Canceling and Changing Nomination of Candidates) (1) The political party shall not cancel or change its nomination of a registered candidate once the candidate is registered, and shall not make an addition to or change the order in the roll of candidates for proportional representation members of the National Assembly (including the roll of candidates for proportional representation members of local councils; hereafter in this paragraph, the same shall apply): Provided, That where the registration becomes invalid due to a ground other than the resignation or death of the party-nominated candidate, the expulsion of him or her from the political party to which he or she belongs, or the central party's revocation of approval of a formation of City/Do party during he or she candidate registration period, an exception shall be made, but if any candidate is added to the roll of candidates for proportional representation members of the National Assembly, the order of such candidate shall come after those already registered. <Amended on Apr. 1, 1995; Feb. 16, 2000; Mar. 12, 2004; Aug. 4, 2005> (2) Every eligible voter shall not cancel or change his or her recommendation for any candidate. <Amended on Apr. 1, 1995; Aug. 4, 2005> Article 51 (Supplementary Registration) Where a party-nominated candidate for a presidential election dies during or after the candidate registration period, the candidate registration may be applied for as provided in Articles 47 and 49 no later than the fifth day from the close of the candidate registration period. <Amended on Feb. 16, 2000> Article 52 (Nullification of Registration) (1) The registration of a candidate shall become null if any of the following events occurs after the candidate is registered: <Amended on Apr. 30, 1998; Feb. 16, 2000; Mar. 7, 2002; Mar. 12, 2004; Aug. 4, 2005; Oct. 4, 2006; Jan. 25, 2010; Jan. 17, 2014; Aug. 13, 2015; Apr. 6, 2018> 1. The candidate is found to be ineligible for election;