Lim Yew Hock
Before 1957, every party member could vote in CEC elections. However, on August 9, 1957, the leftists took control of the CEC, and the original founders (the "Peranakan Circle") lost control. After Lim Yew Hock cracked down on many of the leftist leaders in the CEC in 1957 (as well as many non-PAP leftist leaders in general), the Peranakan Circle regained control of the CEC.