Presidential and Vice Presidential Election and Recall Act Article 25

If the election for president and vice president is held on the same day as an election for other public officials, and a person is registered as a candidate in two or more elections, that person’s registration in the election for other public officials shall be null and void, and the deposit shall not be returned.
中文原文 總統副總統選舉罷免法(新840809制定)第25條
總統、副總統選舉與他種公職人員選舉同日舉行投票時,同時為二種以上候選人登記者,他種公職候選人之登記無效,其保證金不予發還。

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