On May 13, 2026, the All India Anna Dravida Munnetra Kazhagam (AIADMK) legislature party faced a vertical split during a trust vote in the Tamil Nadu Assembly. A total of 25 MLAs, led by rebel leader S.P. Velumani, voted in favor of the confidence motion proposed by Chief Minister C. Joseph Vijay, while 22 MLAs, led by AIADMK general secretary Edappadi K. Palaniswami, voted against it. This division, called for by Speaker J.C.D. Prabhakar, clearly demonstrated the contrasting factions within the party. The MLAs who supported the motion included representatives from various constituencies, while those who opposed it also comprised a diverse group from different regions. The split indicates a growing rift within the AIADMK, raising questions about the party's unity and future direction.