Tamil Nadu's main opposition party - the DMK - along with other parties like Congress, CPI(M) and CPI will hold a state-wide bandh or shutdown today. The reason behind the shutdown is the Cauvery water issue - a decades-old dispute between Tamil Nadu and its neighbouring state Karnataka. The DMK-led opposition parties are demanding that the Cauvery Management Board, as ordered by the Supreme Court, be set up immediately. They have accused the central government of delaying the setting up of the Cauvery Management Board due to electoral gains in the upcoming Assembly election in Karnataka due next month.