 His margin of victory was the highest-ever achieved by the Workers' Party since it first won the constituency in 1991.Yaw, along with fellow MP, Dr Chia Shi-Lu and Mr Ong Teng Koon, was invited to join the Advisory Council on Community Relations in Defence (Accord) which he accepted.In January 2012, news of a rumoured extramarital affair with a fellow member of the Workers' Party broke out.