Former AIADMK MLA Kovai Selvaraj, who was Coimbatore urban district secretary, joined the ruling DMK in the presence of Tamil Nadu CM MK Stalin. Describing the time when the Edappadi K Palaniswami-led AIADMK ruled Tamil Nadu as the state's darkest period, Selvaraj said the DMK government had implemented many schemes for people in just one and a half years.