太陽花學運
On 15 March 2014, Tsai announced that she would once more run for party chief of the DPP against incumbent Su Tseng-chang and Frank Hsieh. However, both Su and Hsieh dropped out of the election in the aftermath of the Sunflower Student Movement. Tsai defeated Kaohsiung County deputy commissioner Kuo Tai-lin by 79,676 votes.