Democratic Progressive Party (DPP) presidential candidate Tsai Ing-wen (蔡英文) has retained a more than 20-point lead over the presidential candidate fielded by the Chinese Nationalist Party (KMT), despite the party’s decision to replace Deputy Legislative Speaker Hung Hsiu-chu (洪秀柱) with KMT Chairman Eric Chu (朱立倫), a Cross-Strait Policy Association poll released yesterday indicated.