There can be no firm discussion until the ruling party complete
their re-drawing of electorial boundaries for the upcoming
election.
But for sure those GRCs currently under PM Lee, MM Lee, SM Goh and
potential candidates for PM like Teo Chee Hian and Ng Eng Hen, and
capable MPs such as Vivan Balakhrisnan, Tharman Sharmugaratnam and
Khaw Boon Wan will not be contested.
My prediction would be:
a. Chiam See Tong will retain his seat,
b. Low Thia Khiang will retain his seat
c. Yeo Cheow Tong will lose his seat and position in Govt.
d. At least 1 GRC (probably Yeo's will fall to either WP or joint
opposition hands)