Presidential and Vice Presidential Election and Recall Act Article 114

Within the period beginning the day candidate registration concludes and ending the day after election day, the National Security Bureau shall coordinate with relevant government agencies to ensure the safety of the candidates for president and vice president within the free area of the Republic of China. The National Security Bureau shall determine the regulations governing procedures for ensuring candidate safety.
中文原文 總統副總統選舉罷免法(新840809制定)第114條
自候選人完成登記日起,至選舉投票日之翌日止,國家安全局應協同有關機關掌理總統、副總統候選人在中華民國自由地區之安全維護事項;其安全維護實施辦法,由國家安全局定之。

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