As passers-by in Hunghom wondered why the DAB's Kowloon West team chose Batman and Robin to canvass for them, chairman Tsang Yok-sing offered a quick answer. 'They are heroic household figures,' said Mr Tsang, who celebrated his 51st birthday yesterday. 'It's very difficult to dress up as Superman. He's too macho,' he said, when asked why Clark Kent's alter ego was not chosen. Batman and Robin joined Mr Tsang, his fellow candidates and supporters in Whampoa Garden, trying to grab pedestrians' attention. They did, but few children dared shake hands with the two household heroes, described intriguingly as 'friends of justice' in a DAB press release. If the doves released by the Democrats yesterday were intended to mimic the fate of party candidates in the election, it was not a good omen. At a ceremony in Fanling, chairman Martin Lee Chu-ming was accompanied by New Territories East candidates Andrew Cheng Kar-foo and Wong Sing-chi in releasing about 20 doves. The doves, they said, represented the Democratic Party and the freedom it pursued. But instead of flying towards to the Legislative Council building in Central, the birds were rained on and many preferred to stay put. Candidates for the geographical elections have finally become aware of the environmental destruction they have created by their mass production of pamphlets. The DAB's Gary Cheng Kai-nam asked whether Christine Loh Kung-wai was aware of the paper she had wasted. She said she was - but her pamphlets were not as big or printed on as good quality paper as Mr Cheng's. Ah, replied Mr Cheng, but I didn't make environmental protection one of my pet subjects.