District 13 consist of Potong Pasir, Machpherson
Potong Pasir is a housing estate located between Toa Payoh and Sennett Estate in the Central Region of Singapore. For urban planning purposes, it is classified under the Toa Payoh area. Potong Pasir is particularly notable for being the longest-held opposition ward in one-party dominant Singapore. Its Opposition Member of Parliament Chiam See Tong held the ward from 1984 to 2011. Potong Pasir is easily accessible by the MRT station on the North East line.
In 2011, the ward, led by Mrs. Lina Chiam, was lost to 3-time challenger Sitoh Yih Pin in what was the slimmest of margins of 114 votes; with 242 votes rejected. Mr. Chiam See Tong led a team of 5 to contest in the Bishan-Toa Payoh Group Representation Constituency (GRC) during that General Elections.
MacPherson is a neighbourhood located in Geylang in the Central Region of Singapore. Its location roughly corresponds to the similarly titled subzone of Macpherson in the Geylang Planning Area and is approximately sandwiched between the neighbourhoods of Aljunied and Paya Lebar. MacPherson largely consists of a small public housing estate centered on Circuit Road and an industrial area. The neighbourhood is served by the Circle MRT Line and Downtown Line at MacPherson MRT station and Mattar MRT station.