Sin Kek Tong

Political career Singapore Democratic Party Sin made his political debut in the 1988 general election when he contested as a candidate of the opposition Singapore Democratic Party (SDP) in Braddell Heights SMC against Goh Choon Kang, a candidate from the governing People's Action Party. He lost garnering 41.2% of the vote against Goh's 58.8%.

Sin contested in Braddell Heights SMC again during the 1991 general election under the SDP banner, but lost to Goh again, garnering 47.73% of the vote against Goh's 52.27%.

Singapore People's Party In 1994, Sin left the SDP with a breakaway faction of SDP members who had supported SDP founder Chiam See Tong during his falling-out with the SDP's central executive committee led by Ling How Doong and Chee Soon Juan. After that, he set up the Singapore People's Party (SPP) on 21 November 1994 and served as its secretary-general.

During the 1997 general election, Sin contested in Ayer Rajah SMC as a SPP candidate against the PAP candidate Tan Cheng Bock. He lost after garnering 26.83% of the vote against Tan's 73.17%.

Singapore Democratic Alliance In 2001, the SPP joined forces with three other opposition parties (NSP, PKMS and SJP) to form the Singapore Democratic Alliance (SDA). During the general election that year, Sin contested as part of a five-member SDA team in Jalan Besar GRC against a five-member PAP team. The SDA team lost after garnering 25.51% of the vote against the PAP team's 74.49%.

Sin contested in the 2006 general election as a SDA candidate in MacPherson SMC against PAP candidate Matthias Yao, but lost with 31.52% of the vote against Yao's 68.48%.

2011 general election After the SPP withdrew from the SDA in 2011, Sin contested in the general election that year as a SPP candidate in Hong Kah North SMC against PAP candidate Amy Khor. He lost after garnering 29.39% of the vote against Khor's 70.61%.

In 2012, Sin stepped down from his position as chairman of the SPP to facilitate party renewal and because of health issues.