Dr Ang Yong Guan, 56-year-old Consultant Psychiatrist at Paragon Medical, President of the Singapore Psychiatric Association from 1997 to 1998 and Chairman of the Chapter of Psychiatrists, Academy of Medicine from 2001 to 2003.
Alec Tok, 46-year-old Artistic Director at One Kind Theatre LLC.
Mohd Isa Abdul Aziz, 53-year-old Business Development Manager for an Australian Oil and Gas company and a member of the Central Executive Committee of the Singapore Democratic Party.
Sadasivam Veriyah, 58-year-old ex-teacher and a unionist, former member of the People's Action Party.
Tan Jee Say, 57-year-old investment adviser and former Principal Private Secretary to then-DPM Goh Chok Tong.
Dr. Vincent Wijeysingha, 41-year-old Executive Director of Transient Workers Count Too (TWC2), a non-government organization advocating the rights of low-waged migrant workers.
Alex Yam, 30-year-old NTUC activist
Ang Wei Neng, 44-year-old vice-president of SBS Transit West District.
Chan Chun Sing, 42-year-old former SAF Chief of Army
Chia Shi-Lu, 40-year-old orthopedic surgeon at Singapore General Hospital
Desmond Choo, 33-year-old deputy director of NTUC's youth development unit and the executive secretary of the Union of Security Employees.
Desmond Lee, 35-year-old legal and regulations department of Temasek Holdings.
Edwin Tong, 42-year-old lawyer
Foo Mee Har, 45-year-old Standard Chartered Bank banker
Gan Thiam Poh, 48-year-old DBS banker
Heng Swee Keat, 50-year-old former managing director of Monetary Authority of Singapore.
Intan Azura Mokhtar, 35-year-old NIE trainer
Janil Puthucheary, 39-year-old surgeon from KK Women's and Children's Hospital
Lawrence Wong, 39-year-old from Energy Market Authority and former civil servant
Low Yen Ling, 37-year-old former EDB director
Ong Teng Koon, 34-year-old commodities trader
Ong Ye Kung, 42-year-old assistant secretary-general from NTUC.
Patrick Tay, 40-year-old trade unionist.
Sim Ann, 36-year-old high-flying civil servant
Tan Chuan-Jin, 42-year-old former SAF.
Tin Pei Ling, 27-year-old in Ernst & Young.
Vikram Nair, 33-year-old lawyer
Zainal Sapari, 46-year-old educator, former Pasir Ris area schools' superintendent
All politicians who were retiring or stepping down from their seats were from the PAP.
Abdullah Tarmugi, Speaker of the Parliament, MP for East Coast GRC.
Ahmad Magad, MP for Pasir Ris-Punggol GRC.
Ang Mong Seng, MP for Hong Kah GRC.
Chan Soo Sen, MP for Joo Chiat SMC.
Ho Peng Kee, MP for Nee Soon East SMC while requesting for the merger into Nee Soon GRC. He also retired from Senior Minister of State for Law and Home Affairs.
Koo Tsai Kee, MP for Tanjong Pagar GRC. He has also been stepped down from the Senior Minister of State for Defence together. His constituency is merged into Tanjong Pagar-Tiong Bahru.
Lee Boon Yang, MP for Jalan Besar GRC.
Madeleine Ho, MP for West Coast GRC, thus making way for the new professional minister Lawrence Wong.
Matthias Yao, MP for MacPherson SMC.
Ong Ah Heng, MP for Nee Soon Central SMC.
Ong Kian Min, MP for Tampines GRC.
Ong Seh Hong, MP for Marine Parade GRC, thus the constituencies were reorganised and the new professional minister Tan Chuan-Jin.
S Jayakumar, MP for East Coast GRC. He earlier exercised retirement from politics and requested in 2009, only in 2011 it was confirmed.
Sin Boon Ann, MP for Tampines GRC, making way for the new professional minister Heng Swee Keat.
Wee Siew Kim, MP for Ang Mo Kio GRC.
Yeo Cheow Tong, MP for Hong Kah GRC without a minister after the previous election, earlier he decided to retire but it is already too crowded.
Yu-Foo Yee Shoon, MP for Holland-Bukit Timah GRC.
Soon after the announcement of the new electoral boundaries, various opposition parties indicated their intent to contest, subject to negotiations between political parties to avoid three-cornered fights. The parties declaring an interest to contest each constituency and their nomination status is reflected below.
