History
The constituency was formed in 1951 when Rural East Constituency was abolished and split into Changi and Seletar constituencies.
During the 1955 Singaporean general election, parts of the constituency were carved out to form the Paya Lebar, Punggol–Tampines, Serangoon and Ulu Bedok constituencies.
During the 1959 Singaporean general election, part of the constituency were carved out to form Siglap Constituency.
During the 1980 Singaporean general election, part of the constituency separated to form Tanah Merah Constituency.
In 1988, following the establishment of group representation constituency (GRC) and single member constituency (SMC), the constituency was known as Changi Single Member Constituency.
In 1991, where Changi had its final contest prior to the redrawning, Workers' Party then-chairman Tan Bin Seng narrowly lost the election at a 6% margin. Changi was originally planned to be contested by the party's future secretary-general Low Thia Khiang, but Low instead chose Hougang SMC.
During the 1997 Singaporean general election, the SMC was abolished and split between Aljunied GRC and East Coast GRC. The Changi division was not present since until the 2025 Singaporean general election where the Changi division reappeared, as part of the Pasir Ris-Changi GRC.
Electoral results
Note: The Elections Department does not include rejected votes when calculating the vote shares of candidates. Hence, all candidates' vote shares will total to 100% at any given election (may not appear so in multi-way contests due to rounding).
Elections in 1950s
Note 1: In 1957, Singapore Malay Union (SMU) was expelled by its alliance partners consisted of UMNO and MCA for fielding a candidate in that by-election which was the reason for the elections department of Singapore to view Fatimah as another independent candidate.
Note 2: Lim Cher Kheng was the then incumbent seeking for another term. He represented the Democratic Party (Not to be confused with the Singapore Democratic Party, which was only formed after Singapore's independence.) which was dissolved by merging with Progressive Party (Singapore) as Liberal Socialist Party within a year from the 1955 General elections. With that consideration, the vote swing for both independent candidate Lim and Liberal Socialist Party candidate Wee will be taken from Lim's previous election result because that is the result for the candidate himself and his party respectively.
Note 3: UMNO, MCA and MIC together with Singapore People's Alliance was informally formed as an alliance in 1961, where it still within this term of election which was the reason for the elections department of Singapore to view Abdul Rahman as a candidate for Singapore Alliance.
