Bengal SIR: The Special Intensive Revision (SIR) of voter lists in poll-bound West Bengal was Union Home Minister Amit Shah's "clever ploy" to topple the 14-year-old Trinamool Congress government, Chief Minister Mamata Banerjee alleged today, adding that such plans won't succeed. Addressing a public gathering against SIR in the border district of Malda in north Bengal, Banerjee said the BJP is "digging its own grave" by carrying out the voter list review just before the Assembly polls. "They cannot take over Bengal. People of Bengal will never support you. Bengal is different from Bihar," she said.