In the March 2018 Kowloon West by-election for the vacancy left by Yau Wai-ching of Youngspiration over the Legislative Council oath taking controversy, Ho ran against veteran Frederick Fung in the intra-party primary election for the candidacy, but later withdrew. Fung later lost in the pro-democracy primary. Ho and other young ADPL members strongly opposed Fung's intention to run in another Kowloon West by-election, which led to Fung's departure from the party.