Supriyo, the junior minister for heavy industries and public enterprises, told reporters he had seen recently that Banerjee had been losing her cool often and said a political debate should be conducted in a quiet manner.
"I have seen Didi is getting more angry these days from her televised media conferences," the BJP MP said.
The singer-turned-politician said the chief minister should also be mindful of words used against people like the Prime Minister Narendra Modi.
He said it is unfortunate that when people have forgotten the hardships following demonetisation and realised it was meant to unearth black money, politicial parties like the TMC are still crying hoarse over it.
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Taking a dig at Banerjee for making her twitter handle dp black, as mark of protest against demonetisation, Supriyo said, "It is a simple thing. Those state leaders and ministers tainted with black spots for their acts are now blackening their DPs."
"If a large number of MPs are elected from a single state to the Pariament, they do have certainly a big contingent and enjoy numerical strength. Same holds true for TMC in West Bengal," he said.
Supriyo said there is a strong undercurrent of support for the BJP in the state which "is manifested by the rise in BJP's vote share gradually."
On Mukul Roy joining the BJP, Supriyo said, "We are taking people having real organisational skills. West Bengal is the next destination for BJP which is already in power in most states and in coalition in some others."
Asked about the Narada investigation against Roy, Supriyo said, "Laws of the land is equal for everyone.
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