Tsai beat her former premier, William Lai, in a national tally for the party’s primary race, Cho Jung-tai, chairman of the independence-leaning Democratic Progressive Party, told reporters.
“We have come up with the strongest candidate for the Taiwanese people,” Cho said, urging the party to unite after the months-long race marked by heated exchanges between Tsai’s administration and the former premier.
Tsai’s administration suffered a defeat in local elections late last year amid mounting criticism over the party’s reform agenda and rising pressure from China, prompting Lai’s resignation as premier.
The self-ruled island is set to hold its presidential election in January, amid heightened tension with China, which considers it a wayward province and has never ruled out the use of force to return it to the fold.
The race for the presidency has grabbed headlines since Terry Gou, the billionaire chairman of Apple supplier Foxconn, said he will seek the nomination for the China-friendly opposition Kuomintang (KMT) party.
KMT is scheduled to choose its candidate in July.
China has been ramping up military and diplomatic pressure to assert its sovereignty over the island, conducting drills near Taiwan and snatching its few remaining diplomatic allies, moves Taipei denounced as intimidation.
Taiwan is one of a growing number of flashpoints in the relationship between Beijing and Washington, which is Taiwan’s main source of arms.
More about: Taiwan