Presidential and Vice Presidential Election and Recall Act Article 33

The Central Election Commission shall determine and issue public notice of the qualifications for registry as a candidate; those who does not meet these qualifications shall not be registered as a candidate. The Central Election Commission shall inform each pair of candidates that the public drawing of lots to determine the number assigned to each pair of candidates included on the list of candidates shall take place three days prior to public notice of the finalized list.If there is only one pair of candidates, that pair shall be assigned number one and the lottery specified in the preceding paragraph shall not take place.The drawing of lots to determine numbers assigned to the candidates shall be conducted under on-site supervision. One candidate from each pair shall be in attendance and shall personally draw one of the lots. If neither candidate is able to attend and personally draw one of the lots, a proxy who has power of attorney for the pair of candidates may draw one of the lots in their stead. If a pair of candidates is not in attendance and has not sent a proxy to act in their stead, or are in attendance, have been summoned three times, and still fail to draw one of the lots, the Central Election Commission shall draw one of the lots on behalf of the pair of candidates.
中文原文 總統副總統選舉罷免法(新840809制定)第33條
候選人資格,由中央選舉委員會審定公告,不合規定者,不准予登記。
審定之候選人名單,其姓名號次,由中央選舉委員會,通知各組候選人於候選人名單公告三日前公開抽籤決定之。
前項候選人姓名號次之抽籤,於候選人僅一組時,其號次為一號,免辦抽籤。
候選人姓名號次之抽籤,應由監察人員在場監察。
各組候選人應由其中一人到場親自抽籤,各組候選人無人親自到場參加抽籤時,得委託他人持各組候選人之委託書代為抽籤,該組候選人均未親自參加或未委託他人代抽或雖到場經唱名三次後仍不抽籤者,由中央選舉委員會代為抽定。

English translation for reference only; the Chinese text prevails. Not legal advice.