"She (Mamata) is the best chief minister in the country. She is delivering goods in the best possible way", he said.
Taking a dig at the state Congress leadership, Bhunia, a former WBPCC president, said the CLP and state Congress should not oppose her just for the sake of opposition.
His brother Bikash Bhunia had quit Congress and joined TMC recently.
Congress MLAs had recently urged the party high command to suspend him for alleged anti-party activities and WBPCC President Adhir Chowdhury had accused Bhunia of working on behalf of TMC.
Congress would not tolerate such indiscipline, Chowdhury had said.
Bhunia had written to West Bengal Assembly Speaker Biman Banerjee, seeking security and a place to sit in the House.