The Jalan Besar Group Representation Constituency is a four-member Group Representation Constituency composed of several city suburbs surrounding the Central Area of Singapore. It is named after Jalan Besar, a street in Singapore that forms this GRC's centrepiece. The street itself is within the Kallang planning area, Kallang itself being part of this GRC. This GRC encompasses several heritage areas, including Little India, Desker Road, Kolam Ayer and Crawford in the North. Kreta Ayer-Kim Seng itself includes the Singapore River, Chinatown and Bukit Ho Swee. There are four wards in the GRC: Kreta Ayer-Kim Seng, Kolam Ayer, Whampoa and lastly Kampong Glam. The current MPs are Josephine Teo, Heng Chee How, Denise Phua and Wan Rizal Wan Zakariah
The Hougang Single Member Constituency is a Single Member Constituency (SMC) located in the north-eastern area of Singapore. Its current MP is Dennis Tan Lip Fong.
Ayer Rajah Single Member Constituency is a former single member constituency in Singapore that existed since 1980. It existed until 2006.
Bukit Timah Single Member Constituency is a former single-member constituency (SMC) in Bukit Timah, Singapore. The name - Bukit Timah still exists since the independence.
Boon Lay Single Member Constituency is a former single member constituency in Boon Lay, Singapore that was formed in 1976 and lasted until 2001 when the then incumbent Goh Chee Wee retired from politics. This ward was subsequently absorbed into West Coast GRC. It was carved out of the Jurong constituency.
Bedok Single Member Constituency is a defunct Single Member Constituency in parts of Bedok South, Singapore. It was formed in 1976 general elections by craving a portion from Siglap constituency and continues throughout till prior to 1988 general elections where this constituency along with neighbouring constituencies namely: Kampong Chai Chee and Tanah Merah forms the greater Bedok Group Representation Constituency.
Ang Mo Kio Single Member Constituency is a defunct single member constituency in Ang Mo Kio, Singapore that was formed in 1976 and continues throughout until 1991 where the Ang Mo Kio town was relatively developed which forms the present day of Ang Mo Kio Group Representation Constituency.
Aljunied Single Member Constituency is a defunct single member constituency in Aljunied, Singapore that was formed in 1959 and continued throughout till 1988 where it was one of the wards that form the Aljunied Group Representation Constituency.
Kampong Chai Chee Single Member Constituency is a now defunct Single Member Constituency within Bedok, Singapore. It was carved from Tampines and Siglap divisions in prior to 1968 general election as the population in Bedok grows. It was one of the forming constituency for the bigger Bedok Group Representation Constituency.
Alexandra Single Member Constituency was a constituency in Singapore. It used to exist from 1968 to 1988 and was replaced by Brickworks GRC. It absorbed Queenstown constituency.
Boon Teck Single Member Constituency was a constituency in Singapore. It existed from 1972 to 1988, and was merged with Toa Payoh GRC.
Kim Seng Single Member Constituency was a constituency in Singapore. It used to exist from 1972 to 1991, where it was merged into Kampong Glam GRC. It was carved out from parts of Bukit Ho Swee and Delta constituencies.
Bukit Ho Swee Single Member Constituency (SMC) was a constituency in Singapore. It used to exist from 1968 to 1984. It was carved out from Delta SMC.
Brickworks Single Member Constituency was a constituency in Singapore. It used to exist from 1976 to 1988. It merged part of Leng Kee and Pasir Panjang.
Kolam Ayer Single Member Constituency (SMC) was a constituency in Singapore. It used to exist from 1976 to 1988, where Sidek bin Saniff was Member of Parliament. It merged with another 2 SMCs in 1988 to form the Eunos Group Representation Constituency.
Telok Blangah Single Member Constituency was a constituency in Singapore. It used to exist from 1959 to 1991.
Buona Vista Single Member Constituency was a constituency in Singapore. It used to exist from 1976 to 1997 and it was merged into Tanjong Pagar GRC.
Bukit Merah Single Member Constituency was a constituency in Singapore. It existed from 1959 to 1997, when it was merged with Leng Kee division of the Tanjong Pagar GRC.
The Bukit Batok Single Member Constituency is a Single Member Constituency covering a portion of Bukit Batok in Singapore. The current MP is Murali Pillai.
People's Action Party 
