 He was caught making derogatory remarks about Mamata Banerjee and for this he was severely criticised by his own party men.In 2012, he was expelled from the Communist Party of India (Marxist) on charge of nepotism, anti-party activities & breach of discipline.In the 2004 Lok Sabha polls, he won the Arambagh seat by a margin of 592,502 votes, which was the highest ever victory margin in Lok Saba polls in the country till it was broken by Pritam Munde of the BJP with a new record margin of 696,321 votes from Beed in Maharashtra.But as It Was In The Byepoll, So It Didn't Counted as the Highest Margin.