The Workers' Party (WP) has added three members to its Central Executive Council, including two new faces unveiled during the Punggol East by-election campaign.
The party announced on Friday that it had co-opted Mr Toh Hong Boon, 33, Mr Dennis Tan, 43, and Dr Daniel Goh, 40, into its highest decision-making body.
The decision was made at a recent CEC meeting and will take effect on Oct 1.
Dr Goh, an associate professor of sociology at the National University of Singapore and Mr Tan, a lawyer, had both spoken at WP rallies during the by-election campaign in January.
Mr Toh was part of the WP team that contested the Moulmein-Kallang GRC at the 2011 General Election. He works at an agrochemicals company.
With the addition of the trio, there will be 18 members in the WP's CEC.