Presidential and Vice Presidential Election and Recall Act Article 2

The election and recall of the president and vice president shall be implemented by way of a common, fair, direct, and secret vote, unless otherwise specified.
中文原文 總統副總統選舉罷免法(新840809制定)第2條
總統、副總統選舉、罷免,除另有規定外,以普通、平等、直接及無記名投票之方法行之。

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