In the 1955 general elections, this ward started as part of Punggol–Tampines SMC which consisted of largely present-day Hougang, Pasir Ris, Punggol, Sengkang, Simei and Tampines.
These were considered rural areas of Singapore and had a very low population (there were only 6,628 voters then, of which only 3,886 of them turned out to vote).
Thus, Tampines SMC was made up of present-day Bedok (except Kampong Chai Chee which is part of the Kampong Kembangan SMC), Pasir Ris, Simei, Tampines.
It remained thus until 1968 when Bedok was largely transferred to Kampong Chai Chee SMC.
Notes: SPA joins UMNO-MCA-MIC alliance to form SA in 1963 GE.