Darjeeling: TMC Darjeeling district president Goutam Deb on Friday alleged a tacit political understanding between the BJP, Congress and CPI(M) in Siliguri. “There exists a Rainbow Alliance in Siliguri, comprising CPI(M), BJP and Congress. The Siliguri leader of the CPI(M) calls it the Siliguri Model. They have a tacit understanding. It is TMC on one side and the trio on the other,” alleged Deb. He stated that according to the understanding, for the Parliamentary election it will be BJP, for the Assembly it will be CPI(M) in the urban area and the Congress in the rural areas, with CPI(M) for the Pourasabha and Panchayat. “At the micro level we have seen that they are giving space to BJP. Where has the ideology gone?” he questioned.