A survey released on the eve of the Democratic Progressive Party’s (DPP) official telephone poll to pick its candidate for next year’s presidential election showed that its frontrunners had a very good chance of beating President Ma Ying-jeou (馬英九) — but not necessarily each other.

The Chinese-language Apple Daily survey showed Tsai Ing-wen (蔡英文), who took a leave of absence as DPP chairpedson to concentrate on the primaries, has a slight advantage over former premier Su Tseng-chang (蘇貞昌) as the polls open, although both would win over Ma by double-digit figures.