DPP Chair Tsai Ing-wen announces presidential bid

File photo of Tsai Ing-wen.

Taiwan opposition Democratic Progressive Party (DPP) chairwoman Tsai Ing-wen registered on Sunday morning as a candidate in the party primary for Taiwan's leadership election next year.

Tsai is the only DPP member to have put themselves in the running for the election, as Tainan Mayor William Lai and former DPP chairman Su Tseng-chang, both previously considered to be challengers, have decided not to run.