Choo as Hougang Candidate. Singapore Press Holdings. 2012 [2021-01-23]. (原始内容存档于2012-06-20). Chan, Joanne. No fixed time within which by-election must be
2021]. (原始内容存档于2021-04-20). Yeoh, Grace. GE2020: Workers' Party retains Hougang SMC with 61.19% of votes. Channel News Asia. 11 July 2020 [4 April 2021]
also a member of the team that contested in West Coast GRC during the election, but he said he would not take up any NCMP seat. Constitution, Art. 39(1)(c);
chapter and a time for healing: PAP wins 81 out of 87 seats; WP takes Hougang, Aljunied, Today (Special Ed.), 8 May 2011: 1 & 4 [2011-05-09], (原始内容存档于2011-05-09)