Mark Tang-shan/Tan-sun Chen is a Taiwanese politician, former Secretary-General of the Office of the President of Taiwan under former President Chen Shui-bian. He was also previously Foreign Minister of the ROC from 2004 to 2006. Before returning to Taiwan, he worked for the United States Department of Commerce from 1973 to 1992, over 19 years.

Annette Lu Hsiu-lien is a Taiwanese politician. A feminist active in the tangwai movement, she joined the Democratic Progressive Party in 1990, and was elected to the Legislative Yuan in 1992. Subsequently, she served as Taoyuan County Magistrate between 1997 and 2000, and was the Vice President of the Republic of China from 2000 to 2008, under President Chen Shui-bian. Lu announced her intentions to run for the presidency on 6 March 2007, but withdrew to support eventual DPP nominee Frank Hsieh. Lu ran again in 2012, but withdrew for a second time, ceding the nomination to DPP chairwoman Tsai Ing-wen. She lost the party's Taipei mayoral nomination to Pasuya Yao in 2018, and stated that she would leave the party. However, by the time Lu announced in September 2019 that she would contest the 2020 presidential election on behalf of the Formosa Alliance, she was still a member of the Democratic Progressive Party.