OTHER STATES Oust CPI(M) from Bengal by 2011 : Mamata July 22 , 2009 00:00 IST Staff Reporter Holds mammoth rally to celebrate victory in Lok Sabha polls KOLKATA : Enthused by her party ’ s landslide victory in the 15th Lok Sabha elections and setting her sights on the forthcoming West Bengal Assembly elections in 2011 , Railway Minister and Trinamool Congress chief Mamata Banerjee urged party supporters here on Tuesday to adopt a “ positive and constructive role to oust the Communist Party of India ( Marxist ) from State politics in 2011 . ” Addressing a mammoth rally in memory of the Youth Congress supporters killed by the police at a protest rally on this day 16 years ago as well as to celebrate the victory in the Lok Sabha elections , Ms. Banerjee said : “ The Trinamool Congress is no more a mere opposition party in State politics .