 She was persuaded to stand for elections in December 1950 for the West Ward or Cairnhill constituency under the banner of the Labour Party, founded in 1948 by Victor J. Mendis.However, she lost in the 1951 City Council Elections, to the Progressive Party representative Soh Ghee Soon.From 1951 to 1955, Choy was nominated by the Governor to the Legislative Council, where she spoke frequently on behalf of the poor and needy, and campaigned for the development of social services and family planning.