LIBERAL Party legislator Lau Wah-sum was trying to keep politics in the family yesterday, as he joined last-minute campaigning for the district board polls. Mr Lau, who is stepping down from the Legislative Council next year, wants his son Peter Lau Man-pong to follow him into a political career, by winning a seat in the Healthy Village constituency of Eastern District on Hong Kong island. But the younger Mr Lau, 33, is already experiencing the problems of being associated with the Liberal Party, of which he is a founding member. 'I was thrown out of a voter's home as soon as he found out I was a member of the Liberal Party,' he said yesterday. Despite that, the younger Mr Lau is still confident of success. 'I will bring several bottles of champagne to the counting station,' he said. His two opponents are Democratic Foundation member Chan Tak-wai and independent Tsai Li-ping. But there was scant interest in some of yesterday's last-minute campaigning. A colourfully decorated double-decker bus, sent around east Kowloon by the Government yesterday, attracted little attention with its message encouraging people to vote.