Prime Minister Lee Hsien Loong made his second foray in as many days into opposition territory with a two-hour campaign appearance in Aljunied GRC yesterday.

Making four stops across the group representation constituency held by the Workers' Party (WP), he was mobbed by people wanting pictures and selfies.

He started at Hougang Mall, then went to Serangoon Garden Market, made a brief detour through a neighbourhood dog party at Chartwell Drive Park and concluded the walkabout at two food centres along Bedok Reservoir Road.

He was accompanied by his wife, Ms Ho Ching, former People's Action Party (PAP) chairman Lim Boon Heng and the five candidates that the PAP is fielding to unseat the WP team in the GRC.

They are Mr Yeo Guat Kwang, Mr Victor Lye, Mr K. Muralidharan Pillai, Mr Shamsul Kamar and Mr Chua Eng Leong.

On Friday night, Mr Lee spoke at the PAP's rally in Aljunied GRC, and told residents that the ruling party was fully behind its candidates, who have been called a "suicide squad" as they are up against a team of heavyweight WP MPs.

Aljunied residents who met Mr Lee yesterday were pleasantly surprised to see him.

Data entry assistant Norlizah Mohamad, 44, was delighted that she got to meet "a good and sincere leader" and said she would likely vote for the PAP.

Singapore Institute of Technology student Prasana G., 24, said it was a "nice gesture" that Mr Lee came to Aljunied, but she was still leaning towards the WP.

"The candidates are their top leaders," she explained.

Law graduate Anand Retnam, 25, said he was undecided. "On the one hand, there is the question of what's better for us (residents).

"On the other hand, there is the national need to have an opposition presence, and it seems like it is up to us to provide it."