Bishan–Toa Payoh Group Representation Constituency

Both the Thomson and Toa Payoh GRCs were uncontested since the 1991 General Elections but in 2001, Ibrahim Othman, Leong Horn Kee and Hong Tat Kin retired from political service, they were succeeded by Ng Eng Hen, Hri Kumar Nair & Zainudin Nordin succeeded him. In 2006, Davinder Singh retired from political service, he was succeeded by Josephine Teo Li Min. The Bishan–Toa Payoh GRC enjoying the same situation from 1997 until 2011 with former Deputy Prime Minister of Singapore, Wong Kan Seng leading the team until 2011 with the first contest is with Singapore People's Party led by former opposition leader Chiam See Tong with results of 56.93% to 43.07% . Its boundaries also remained intact throughout its existence until 2015 when it was expanded in size to include Balestier, MacRitchie Reservoir and Novena.

In 11 September 2015, when Wong Kan Seng retired from political service after 31 years, Hri Kumar Nair quit running for political office just before the 2015, citing his wife’s diagnosis of lymphoma in 2012 as a factor and Zainudin Nordin quit running for political office citing wanting to spend more time with his family. They were succeeded by Chong Kee Hiong, Chee Hong Tat and Saktiandi Supaat. In 2015 Singaporean general election, the second contest with the Singapore People's Party led by Benjamin Pwee with results of 73.59% to 26.41%. In 2020, the third contest is with Singapore People's Party led by former opposition leader Steve Chia with the results of 67.26% to 32.74% and Bishan North where Josephine Teo was managing was carved into Marymount Single Member Constituency and reducing the size to four seats, while and she was transferred to Jalan Besar GRC. Balestier and Novena was subsumed into the neighbouring Jalan Besar GRC and in return, Blocks 210 to 224 from the former opposition constituency of Potong Pasir were absorbed into Toa Payoh East.

The westernmost portion of Bishan–Toa Payoh GRC consists of part of the Central Catchment Nature Reserve which is shared with Holland–Bukit Timah GRC and Kebun Baru SMC.

Bishan-Toa Payoh GRC and Marymount SMC are under the same town council, Bishan-Toa Payoh Town Council.

• 2020 General Election's result
• 2015 General Election's result
• 2011 General Election's result
• 2006 General Election's result
• 2001 General Election's result
• 1997 General Election's result
• 1991 General Election's result
• 1988 General Election's result