With 26,951 voters, it is also the second biggest single-member ward on the island.

The ward, carved out of the former Bukit Timah GRC, is a mix of HDB flats and private housing in Clementi, Toh Yi and Toh Guan.

And residents know what they want in a candidate.

"He must be a man of integrity. He must be able to speak up for the ordinary folks," one resident said.

"We want to vote for someone who can really do something for you, not just because when the elections come, you come and talk to us you see, because you cannot convince me," another said.

Dr Wang Kai Yuen has represented the constituency for the People's Action Party for the past 17 years.

As his rally truck makes its rounds of the ward, the 53-year-old managing director is also going door-to-door to meet the residents.

Dr Wang says some flats will be upgraded in the next year and he hopes to petition for more private estates upgrading.

And this incumbent is confident of a win.

"I would not want to state a numerical number but based on the national average, we would be able to achieve better than the national average," Dr Wang said.

Also going door-to-door is the Singapore Democratic Alliance's Robin Tong, a 53-year-old associate manager.

He wants to add more greenery, make the estate elderly-friendly and bring back smiles to the people.

"If the residents can give me an opportunity to know them and they to know me, then I can build up a rapport with each and everyone," Mr Tong said.

Independent candidate Tan Kim Chuang, 55, is a regular at the Speaker's Corner - and that is where the Colombo Plan Scholar was inspired to stand for election.

"What I can do for the residents would be checks and balances in the parliament if I'm voted in," said Mr Tan, a 55-year-old dealer representative.

All three candidates say they welcome the challenge to battle for the hearts and minds of the people in the run-up to November 3.