After a successful stint as a Hindi playback singer, Supriyo entered politics in 2014, getting a ticket to contest the Lok Sabha elections for the BJP from West Bengal on Ramdev's recommendation.
Udayan Guha, Partha Bhowmick, Snehasis Chakraborty and Pradip Mazumdar were sworn in as cabinet ministers.
A senior TMC leader said Supriyo's appointment as a national spokesperson was a part of the strategy devised by the party to expand its base outside Bengal.
Amid uncertainties over Babul Supriyo's swearing-in, now CBI books his ex-staffer in corruption case
Governor Jagdeep Dhankhar had said that his constitutional job concerning Babul Supriyo's swearing-in was over as he had nominated deputy speaker Asish Banerjee to do his part.
Nominated Deputy Speaker for administering oath to Babul Supriyo, my constitutional job over: Bengal Governor
Babul Supriyo, a former Union minister of state in the Narendra Modi government, had left the BJP in a huff after being dropped from the post, and joined the TMC.
West Bengal Governor Jagdeep Dhankhar in a prompt response, said it was not possible to accept Babul Supriyo's request, citing constitutional limitations.
West Bengal Governor Jagdeep Dhankar has refused to clear a file relating to that swearing-in ceremony.
Taking to Twitter to retaliate, Halim said that her party believes in a classless society where the rich and the poor will not be differentiated by the wealth and property they own.
Born in West Bengal's Uttarpara as Supriya Baral in 1970, he changed his name to Babul Supriyo while trying his luck as a Bollywood singer after leaving his banking job.
TMC leader Babul Supriyo won the Ballygunge assembly by-poll, defeating his nearest rival of the CPM, Saira Shah Halim, by a margin of 20,228 votes.
Ballygunge by-poll: Babul Supriyo confident of winning election, says West Bengal is with 'Didi', TMC
The Ballygunge Assembly seat by-poll was necessitated after the demise of state Minister Subrata Mukherjee.
The reason is the saffron baggage of its candidate Babul Supriyo, who switched over from the BJP a few months ago.
Eying a first victory in this constituency, Trinamool Congress has fielded Shatrughan Sinha.
Sinha has been fielded for by-election to the Asansol Lok Sabha constituency, while Supriyo was nominated for the Ballygunge Assembly seat.
He also said that he has no differences with anyone in the prestigious assembly constituency from which his new party has fielded him.
"My decision to quit was prompted by the politics of hatred, divisiveness (practised in the saffron camp). I could no longer reconcile to such brand of politics," he tweeted.
Supriyo, the former two-time BJP MP, had joined TMC last year just months after he was dropped as a minister following a union ministry reshuffle.
Mamata banks on star power for crucial Bengal bypolls as she announces Shatrughan Sinha, Babul Supriyo as candidates
Supriyo’s political career was in question after he was not fielded in any of the four Assembly constituencies — Dinhata, Shantipur, Khardah and Gosaba — where by-elections were held last year.
The former governor of Meghalaya and Tripura, however, did not directly name Supriyo who joined the TMC in September last year, weeks after he was dropped as a minister in a Cabinet reshuffle.
West Bengal minister Aroop Biswas, who was hospitalised after being diagnosed with COVID-19, was discharged on Tuesday morning.