Chang was first appointed and involved in politics as a
minister without portfolio of the
Executive Yuan in 2012 under the
Sean Chen cabinet. On March 3, 2014, the
National Science Council was upgraded to the Ministry of Science and Technology, and Chang was named as its first minister. On December 8, 2014, after the ruling
Kuomintang lost the
local elections, Chang became the
vice premier after a cabinet reshuffle.
Caretaker Premiership (2016) On January 16, 2016, after the KMT lost the presidency and its majority in the
Legislative Yuan at the
2016 Taiwanese general election, the then-incumbent
premier Mao Chi-kuo resigns and refuse to stay at the position, Chang served as the acting premier while Mao is outgoing. On 1 February, the then-incumbent President
Ma Ying-jeou approve resignation of Mao Chi-kuo, and appointed Chang to form the
cabinet to serve the remaining four months during the period of transition of power. As a result, Chang became the first
nonpartisan premier of the history in Taiwan's politics.
2020 presidential campaign Chang announced his independent candidacy for the
2020 Taiwan presidential election on 17 February 2019. Chang later joined the presidential campaign of Kuomintang candidate
Han Kuo-yu as an adviser without halting his own campaign. In August 2019, Han formed a national policy advisory group headed by Chang. Chang's selection as the Kuomintang's
2020 Taiwan presidential election vice presidential candidate was announced on 11 November 2019.
Taoyuan mayoralty (2022–) In May 2022, Chang was nominated by the
Kuomintang as its candidate in the
local elections for the
Taoyuan mayoralty after a closed-door meeting of the party's Central Standing Committee. Chang was elected by 52.02% percentage of votes and assumed office in December 2022. ==See also==