Fewer than 100 more nominations for chief executive are needed by Donald Tsang Yam-kuen to win the top post without a contest, sources say, and he will fight to the last to knock out his rivals. The almost certain successor to Tung Chee-hwa picked up more votes yesterday, but stirred controversy at a meeting with legal-sector electors and still has more work to do to win over some pro-Beijingers. Mr Tsang won nominations from four Election Committee members in the social welfare sector - which had been seen as a bedrock of support for rival candidate Lee Wing-tat, the Democratic Party chairman. Mr Tsang lobbied voters in the sector for support at a meeting on Wednesday. The favourite also secured the nominations of six education-sector electors, and sources said more than 600 of the 796 eligible Election Committee members had nominated him for chief executive. Sources close to Mr Tsang's election office said he was likely to wait until the last minute to officially file his candidacy. Nominations close on Thursday. One of the welfare sector electors, Barry Wong Man-sing, nominated Mr Tsang yesterday and said three colleagues had also backed him. Another two or three were likely to follow suit soon, he said. All but four of the 36 votes in the sector were initially seen as backing Mr Lee. But 22 of them announced last week that they would not give their nominations as a block, reportedly after having come under pressure from mainland figures. In a meeting yesterday with electors representing the legal sector, Mr Tsang refused to retract his earlier comment that the so-called 'one vote for two' strategy some electors have adopted, of nominating one of his rivals but ultimately voting for him, was immoral. Eric Cheung Tat-ming, of the pro-democracy Article 45 Concern Group, an elector from the legal sector, said he told Mr Tsang that the accusation was inconsistent with his pledge to build a harmonious society. 'The atmosphere of the meeting became tense after Mr Tsang refused my request to retract the accusation,' Mr Cheung said, adding that he would not nominate Mr Tsang for chief executive. Three lawmakers representing the Federation of Trade Unions - Chan Yuen-han, Wong Kwok-hing and Kwong Chi-kin - also met Mr Tsang but have not made up their minds about who to nominate. Ms Chan said Mr Tsang had declined to give a timetable for introducing a minimum wage and maximum working hours. Mr Tsang met 12 members from the engineering sector and told them he would help firms seek contracts for the 2010 Asian Games in Guangzhou if he was elected. Six members from the education sectors also nominated Mr Tsang yesterday.