社会主义阵线
In August 1961, Chin Siong and his fellow PAP members who were expelled formed a new party, called the Barisan Sosialis ("Socialist Front" in Malay), with Chin Siong as secretary-general and Lee Siew Choh as chairman. Meanwhile, details on the terms of merger with Malaya had been planned out by the PAP without any other party or public input.