黃大仙區議會
Wu has been member of the Wong Tai Sin District Council since he won in the King Fu constituency in the 1999 District Council elections. In the 2003 District Council elections, he grabbed in total of 4,480 votes in his King Fu constituency, only second to Leung Yiu-chung in Kwai Fong. In the 2007 elections, he was returned with the highest votes in the election and was called the "King of Votes". He stepped down from the District Council in the 2019, and his party's candidate Rosanda Mok then retained the seat.