He Ting Ru began volunteering with the WP in the Paya Lebar division of Aljunied GRC after the
2011 general election. She made her political debut in the
2015 general election as part of a five-member team in
Marine Parade GRC. They lost to the PAP with 35.93% of the vote. She previously served as Secretary of the Workers' Party Youth Wing, and oversaw the Youth Wing's outreach efforts in the areas of service, education and heritage.
2020–present: Member of Parliament During the
2020 general election, she led a four-member WP team contesting in Sengkang GRC with team members
Jamus Lim,
Louis Chua and
Raeesah Khan. On 11 July, she was elected as a
Member of Parliament (MP) for Sengkang GRC. She was elected to the party's Central Executive Committee (CEC) as Treasurer and appointed as the Chairwoman of the Sengkang Town Council (SKTC) since 2020. He Ting Ru has advocated for reform of the public health system, intervention on cost of living issues, and various political accountability issues in Singapore. In 2020, she supported a motion by Aljunied MP Sylvia Lim pertaining to the issues raised by a major court case involving Parti Liyani, a domestic worker who worked for former Changi Airport and Surbana Jurong Chairman Liew Mun Leong. The motion called on the Government to "...recognise and remedy its shortcomings in order to enhance justice for all, regardless of means or social status, including facilitating a review of the justice system." During the debate she pushed for the creation of a publicly funded Public Defender's Office and for statutory compensation for miscarriages of justice. In response to the motion, PAP MP Murali Pillai put forth amendments removing the call for a review of the Singaporean justice system, which WP MPs dissented against. In 2021, He Ting Ru raised a motion on gender equality with then Aljunied MP Leon Perera. During the Foreign Interference (Countermeasures) Act 2021 debate, she tabled amendments to the bill introducing judicial oversight with hearings to be held in camera. The amendments were rejected by the Government. She also tabled amendments to the Carbon Pricing (Amendment) Bill in 2022, proposing the listing on a public registry of businesses permitted to exceed the limit on the use of international carbon credits. The Government rejected the amendment, citing the need for business confidentiality. In 2024, He Ting Ru raised an adjournment motion pushing for tougher regulations and economic interventions in order to tackle the impact of urban heat in Singapore. During the
2025 general election, Ru was in a four-member WP team and contested in
Sengkang GRC with
Jamus Lim,
Louis Chua, and
Abdul Muhaimin and won the GRC with 56.32% of the votes. Ru was elected as Member of Parliament representing
Sengkang GRC in the
15th Parliament. ==Legal career==