Faisal joined the WP in February 2006. He was subsequently assigned to the Kaki Bukit division of the GRC and became a full-time MP, retaining his seat during the
2015 and
2020 general elections. Within the Aljunied–Hougang
Town Council (AHTC), he served as chairperson of the Estate and Liaison Committee (2013–2018), chairperson of AHTC (2018–2021), and vice-chairperson of AHTC (2021–2022). During the
2025 general election, Faisal led a five-member WP team contesting
Tampines GRC in a four-way contest against the PAP and two other opposition parties. They lost to the PAP team with 47.37% of the vote.
Vice-chairpersonship of WP Faisal was elected into the Central Executive Committee (CEC) of the WP as the party's vice-chairperson on 29 May 2016, replacing Mohammed Rahizan Yaacob. He has since retained the position in subsequent CEC elections. In February 2022, in relation to Khan's resignation, the
Committee of Privileges (COP), on account of Faisal and Singh's conduct before it, recommended that the two be referred to the Public Prosecutor for review to determine whether criminal proceedings should be brought against them. On 19 March 2024, the
Singapore Police Force and Attorney-General's Chambers announced that Faisal would not receive charges for his refusal to answer questions asked by the COP, unlike Singh, who pleaded not guilty to the two charges levied against him of lying to a parliamentary committee. However, the previous day, the police had formally issued an advisory to Faisal after consultation with the Public Prosecutor, advising him to "familiarise himself with the conduct expected of Members of Parliament" and "to refrain from any act that may be in breach of [the Parliament (Privileges, Immunities and Powers) Act 1962]".
Parliamentary representation Maintenance of Religious Harmony Act During the debate over a parliamentary bill to amend the
Maintenance of Religious Harmony Act, Faisal argued with
K. Shanmugam, Minister for
Law and
Home Affairs, over the separation of religion from politics; during the argument, Faisal stated that he disagreed with the total separation of religion from politics. While saying that people "[should not] use religion for the benefit of politics", he argued that the intertwining of religion and politics in the formulation of policies was inevitable.
Allowing uniformed Muslim women to wear tudungs at work During his parliamentary career, Faisal persistently proposed to allow Muslim nurses and women in uniformed services to don the
tudung, an Islamic headscarf, while working. In 2017, he was rebuked by
Masagos Zulkifli,
Minister-in-charge of Muslim Affairs, for "subtly and frequently needling" the
Malay–
Muslim community with the proposal. Masagos said that such topics should be discussed behind closed doors instead of in Parliament, as their publicity was capable of disrupting racial and religious harmony in Singapore. In 2021,
Prime Minister Lee Hsien Loong announced that Muslim nurses in Singaporean public healthcare would be allowed to wear the tudung with their uniforms.
Repeal of Section 377A In November 2022, Parliament voted on a repeal of
Section 377A of the Penal Code, a law that criminalised sex between consenting adult males. Faisal was absent due to a
COVID-19 infection, but conveyed through Singh, on the first day of the parliamentary debate, that he opposed the motion as "a matter of religion and conscience".
Wear White campaign In June 2014, Faisal was seen alongside campaign organisers and supporters for the Wear White campaign, an anti-
LGBT Muslim movement in Singapore specifically opposing homosexuality and
Pink Dot SG. He stated that he backed the movement in his personal capacity "as a Muslim individual", saying that it "[had] nothing to do with the party stand". == Personal life ==