Amid talks of a unified opposition to take on the BJP in 2019, Bengal chief minister Mamata Banerjee has again lashed out against the Congress. Talking of the political situation in the state, Ms Banerjee clubbed the Congress with the BJP, the Left and the Maoists, as the "darkest underbelly of society". "The CPM is falling at the feet of the BJP and clutching at their straws to stay afloat...Congress is opposing BJP in Delhi and holding hands here. Where are the rules, the principles of the Congress? CPM, Congress, Maoists and BJP... they are the darkest underbelly of society," the Trinamool chief said.