
Last minute ministerial switches by the ruling PAP included Deputy Prime Minister Gan Kim Yong moving east to Punggol where he will face WP star candidate Harpreet Singh.
The PAP will hold onto Marine Parade-Braddell Heights after the first walkover the city state has seen since 2011.
Deputy Prime Minister Heng Swee Keat and Senior Minister Teo Chee Hean confirmed they would retire from politics.
A rare four-cornered fight will take place in the Tampines GRC.
The PAP threw up several surprise moves as nominations began at 11am and ended at noon, with Deputy Prime Minister Gan Kim Yong making a switch from the northwest to the northeast new group representation constituency (GRC) of Punggol.
The move will put Gan in a head-to-head contest against the WP’s star candidate, senior counsel Harpreet Singh, who leads the team in the constituency, which borders the party’s stronghold multi-seat constituencies of Sengkang and Aljunied.
While Marine Parade GRC had been touted as a key battleground constituency, in the end, the PAP sailed through with a walkover as the opposition did not field any team.

But the vote is more than a referendum on Wong. It will also be read as a barometer of how well his team of fourth-generation leaders – otherwise known as the 4G – has handled a series of pressing issues such as the rising cost of living, jobs and affordable housing.