Executive councillor Cheng Yiu-tong yesterday accused former chief secretary Anson Chan Fang On-sang of making illogical excuses to explain her decision not to run in the next chief executive election. Speaking after the National Day reception at the Convention and Exhibition Centre, Mr Cheng said Mrs Chan should have known the nature of the election long before taking part in a pro-democracy rally last December. 'Whether the election is a fair one or not, she should have known it five years ago. It is impossible to have known that the election is unfair only after the rally last year,' he said. Mr Cheng speculated that Mrs Chan did not plan to run because she realised after her appearance in the rally that she was not as popular as before. Mrs Chan said on a radio programme on Saturday that she had considered running for the chief executive election 'from time to time' since her retirement in 2001. But she said she had given up the idea after the rally because she considered the election unfair. Mr Cheng also said Mrs Chan's criticism of the government had sometimes been awkward. 'She cannot make use of her close relationships with the civil servants - the asset which she enjoys - to criticise the work of the government,' he said. He was responding to Mrs Chan's criticism of low morale among civil servants and of inadequate communication between bureau chiefs and their permanent secretaries. Speaking on RTHK's Letter to Hong Kong yesterday, Democratic Party chairman Lee Wing-tat accused Chief Executive Donald Tsang Yam-kuen of failing to come up with a concrete election platform in the chief executive election last year. He said the party's attempt with its allies to field a challenger would prompt Mr Tsang to face the public. The allies plan to put forward a joint platform of detailed policies.