Amid a tussle between the DMK-led government and Tamil Nadu Governor R N Ravi, Congress president Mallikarjun Kharge on Wednesday accused the BJP of using governors as 'karyakartas' (party workers) and said that the "brazen overstepping of the Constitution" by a few of them recently has sullied federal structure of Indian polity.

Ravi had a face-off with the state government in the Assembly where Chief Minister M K Stalin, also president of the ruling DMK, piloted a resolution against the Governor's deviation from his customary address to the house. Following the face-off, the governor staged an unprecedented walkout from the assembly.