Labour functional constituency candidate Ng Yat-wah is confident of winning a seat despite failing to win support from the Confederation of Trade Unions (CTU).
Mr Ng, from the Catholic Institution Staff Association which is a member union of the CTU, was told the union would neither mobilise members to help him nor recommend him to member unions.
Of the roughly 360 voters in the constituency, 16 are from the CTU. But it is not standing for the functional constituency and Election Committee polls because it said they were undemocratic.
Lee Cheuk-yan, head of the CTU, said the union had no preference for candidates.
'It cannot be said we're boycotting the polls. But we won't throw our weight behind any of the five candidates,' he said.
Member unions would be allowed to make their own choices, Mr Lee said. But he added that unions might cast blank votes, as some unions were said to have done in the Election Committee poll in April.
