Public officials Election And Recall Act Article 39

The vote for the election of public officials shall be completed ten days before the term of the current public officials expires. However, this shall not apply to the date by which votes for new elections, new votes, or by-elections shall be completed.If the President of the Republic of China orders the dissolution of the Legislative Yuan, the vote for the election of legislators shall be completed within sixty days from the date the president announces the dissolution.
中文原文 公職人員選舉罷免法第39條
公職人員選舉,應於各該公職人員任期或規定之日期屆滿十日前完成選舉投票。
但重行選舉、重行投票或補選之投票完成日期,不在此限。
總統解散立法院後辦理之立法委員選舉,應於總統宣告解散立法院之日起,六十日內完成選舉投票。

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