The Pattali Makkal Katchi (S. Ramadoss) (transl.âÂÂProletarian People's Party (S. Ramadoss); PMK (S. Ramadoss)) is a splinter faction of the regional political party Pattali Makkal Katchi (PMK), based in Tamil Nadu. It is currently led by founder Dr. S. Ramadoss, who founded the original PMK that is currently led by his son, Anbumani. The faction emerged in 2025 after a major leadership conflict between Ramadoss and his son, Dr. Anbumani Ramadoss, over control of the party. While the Election Commission of India (ECI) has issued communications recognising AnbumaniâÂÂs camp, the Ramadoss faction rejects these claims, insisting that procedural norms were violated and that AnbumaniâÂÂs term as president expired in May 2025.
The parent party, PMK, was founded by Dr. S. Ramadoss on 16 July 1989, emerging out of the Vanniyar Sangam movement that had spearheaded the 1987 Vanniyar reservation agitation. The party sought to secure political representation for the Vanniyar community of northern Tamil Nadu.
Throughout the 1990s and 2000s, the PMK aligned with different state and national coalitions, including the NDA and the UPA, often playing a pivotal role as a kingmaker in coalition politics.
In early 2025, tensions between Ramadoss and his son Anbumani intensified over party appointments, particularly the elevation of RamadossâÂÂs grandson P. Mukundan as youth wing president. In April 2025, Ramadoss demoted Anbumani from president to working president, sparking a leadership contest.
AnbumaniâÂÂs camp organised a general council meeting in August 2025 that extended his term and secured ECI communication recognising his leadership and office bearers until August 2026. The Ramadoss faction disputes the legality of this meeting, claiming it was unauthorised and against party by-laws. They argue that AnbumaniâÂÂs tenure ended on 28 May 2025.
In the 2021 Tamil Nadu assembly election, the undivided PMK won five seats. Following the 2025 split:
The Ramadoss faction continues the founderâÂÂs emphasis on: