in the PAP campaign in the constituency. In early 2008, Chiam suffered a mild stroke which led to the suspension of his regular Meet-the-People Sessions (MPS). Although he recovered, Chiam said in 2011 that there were still remnants of the stroke he had suffered. In 2009, Chiam celebrated his 25th year as the Member of Parliament for Potong Pasir SMC. That year, he also announced that he did not plan to contest in Potong Pasir SMC in the next general election, and would instead contest in a Group Representation Constituency (GRC). In 2010, Chiam tried to bring the Reform Party into the SDA. He reportedly accepted the conditions the Reform Party set out for joining the SDA, but the other members of the SDA Council opposed the terms of entry and blocked the move. In 2010 and early 2011, it was reported the some SDA Council members felt that Chiam was unable to fulfil his role as the chairman of the party after he had cut back his political activities following his stroke in 2008. On 28 February 2011, the SDA Council voted to relieve Chiam of his role as chairman, but stressed that they still hoped to field him as a candidate in the next general election. On 2 March 2011, however, Chiam announced that the SPP was withdrawing from the SDA, and that he would contest under the SPP banner in the next general election. 2011 general election Between 1997 and 2011, Low Thia Kiang and Chiam were the only elected opposition Members of Parliament (MP) in Parliament. During the 2011 general election, Low and Chiam left their respective strongholds in Hougang and Potong Pasir SMC to challenge the ruling PAP in Group Representation Constituencies (GRCs). Low would challenge the ruling PAP in Aljunied GRC, while Chiam would contest the Bishan–Toa Payoh GRC. In so doing, Low and Chiam risked a situation where there would be no elected opposition MPs in Parliament had they lost. Chiam and the SPP team ultimately lost with 43.07% of the vote against the PAP team's 56.93%. Chiam's wife, Lina Loh, contested under the SPP banner in Potong Pasir SMC but lost to the PAP candidate Sitoh Yih Pin by a narrow margin of 114 votes (0.72%), garnering 49.64% of the vote against Sitoh's 50.36%. However, Loh qualified for a parliamentary seat as a Non-Constituency Member of Parliament in the 12th Parliament and