[8] The event was postponed to 3 August and was re-located to the Swissotel Merchant Court Hotel, attracting an audience of 1,000 people.

[18] On 12 January 2020, the party had their second door-to-door house visits at West Coast GRC which was led by Tan and joined by more than 200 members and volunteers.

[24] Lee Hsien Yang joined the PSP as a member on 24 June, but did not contest in the forthcoming election, claiming that the PAP had "lost its way".

[25] The Reform Party accused the PSP for not living up to an agreement so that they could avoid a three-way fight with the PAP in Yio Chu Kang SMC.

[26] On 10 July 2020, despite posing strong challenges in among the nine constituencies and fielding the largest slate of candidates this election with 24, none of the contested seats ended up victorious;[27] however, the seat that the party came closest to winning was West Coast GRC where Tan lead the team, being defeated by the ruling People's Action Party team led by Communications and Information minister S Iswaran in a 51.69%-48.31% of the votes.

[31] Prior to the results, Tan earlier revealed that he will decline taking up the NCMP position calling it as a 'ploy', but allows decision to be made by the other team members.

[32] On 14 July, PSP revealed Hazel Poa and Leong Mun Wai as the two members who would be taking up the NCMP seats.

[33] After the elections, Hazel Poa and Leong Mun Wai stepped down as office bearers to focus on their NCMP duties.

In addition, a Parliamentary Secretariat was formed to help the NCMPs with policy research for their duties, which is headed by both Leong Mun Wai and Hazel Poa.

[37] On 1 April, PSP announced that Francis Yuen has taken over as the secretary-general of the party, with Tan Cheng Bock being the chairperson.

[38] Later on 26 April, youth wing head Terence Soon resigned citing career opportunities and family considerations, with newly elected member Jess Chua taking over three days later.

[46][47][48] On 14 February 2022, Kumaran Pillai told party leaders he would step down from the positions of communications chief and party spokesman, taking a "leave of absence" for an unspecified period of time due to business ventures and health considerations, including a frozen shoulder sustained during a walkabout in the 2020 general election.

Pillai will still be in the central executive committee, with Jonathan Tee taking over as the new communications chief, announced three days later.

[54][55] Prior to the election, Lee Hsien Yang also have expressed his intention to run for candidacy, but ultimately did not collect his application forms.

[58][59][60] In February 2020, PSP announced its first public policy proposal which includes: a) Broader relief package for businesses, b) Expansionary budget to tide through the current crises, c) Fiscal budget is not a goodie-bag, d) Building a sustainable economy, e) No to GST hike, f) Taxpayers should not be burdened for large infrastructure projects and g) A prudent approach to expenditures.

The party also called for a more "broad-based" approach in helping the transport, retail, and food and beverage industries and conducting a review of the education system.

[64] On climate change, Tan Cheng Bock has suggested that government and government-linked companies should provide incentives for renewable energy usage.

[65] Tan Cheng Bock has promised to call for the review of the India–Singapore Comprehensive Economic Cooperation Agreement (CECA), one of the terms which allow the free movement of Indian professionals in 127 sectors to enter and work in Singapore.

The manifesto also states that the dependence on foreign labour in Singapore has caused problems such as congestion, social strains and depressed wages.

By curbing what the PSP describes as the easy supply of foreign manpower, they hope to encourage employers to invest in equipment or processes for higher productivity.

During the party launch ceremony, Michelle Lee called for the lowering of voting age from the current 21 to 18 in line with international standards.

[69] The PSP's 2020 manifesto states that the over-dominance of the People's Action Party, which has consistently held over 90% of the seats in the Parliament of Singapore, should be reduced.

In 2019, Michelle Lee commented on the high ministerial salary "keep ministers in their ivory towers" which prompted them afraid to take risks, disagree or lose their jobs.