TMC Split: The Battle for Political Control in West Bengal

The whole thing is a mess, really. That rebellion inside the Trinamool Congress —it just blew the doors open, kicking off this massive constitutional and political argument in West Bengal. Can an MLA get kicked out of a party and still run the legislature wing? It’s the big, messy question now.

The urgency hit hard on Wednesday. Fifty-eight dissident TMC MLAs backed the expelled leader, Ritabrata Banerjee, to be the head of the legislature party. They managed to get the Assembly Speaker, Rathindra Bose, to recognize them. That’s the first split in twenty-eight years, just like that.

Look, the Mamata Banerjee camp still controls the actual organizational structure of the party. But the rebels have their numbers in the Assembly. They’re using that strength to claim legitimacy, setting up this whole legal and political fight over who actually represents the "real" TMC.

So, what actually happened?

News agencies like PTI said the dissident group, led by Ritabrata Banerjee and Sandipan Saha, sent letters of support to the Speaker. Fifty-eight legislators. They comfortably crossed that two-thirds mark required by the anti-defection law.

The TMC has eighty seats in the Assembly. So the requirement was fifty-four. They hit it.

Then they elected Banerjee as Leader of Opposition. They set up a whole new leadership structure just for the legislature side. The Speaker accepted it. That’s the immediate win for the rebels.

But here’s the tricky part. They didn't go after Mamata Banerjee herself. They sidestepped her. They focused on the influence of the national general secretary, Abhishek Banerjee. They basically said they still accept Mamata as the leader, but not her nephew’s authority over the legislative stuff.

Does being expelled automatically mean you can’t sit in the Assembly? No. That’s a key thing. The Supreme Court and the election law folks have said it a hundred times: being an MLA means you were elected by voters. It doesn’t depend on whether you stay in the party.

An expelled legislator is still an MLA unless the anti-defection law kicks them out. That’s the Tenth Schedule.

The whole anti-defection thing changed a lot with that 2003 amendment. Before that, if one-third of lawmakers split off, you got protection. That protection is gone now.

Now, you need a "merger" involving at least two-thirds of the party to avoid disqualification. The rebels are arguing they hit that number with their fifty-eight MLAs out of eighty.

But legal experts are watching this. Crossing that two-thirds line doesn't automatically mean you own the whole political party.

This is where the split between the legislature party and the political party gets really important. The legislature party is just the MLAs in the Assembly. The political party is the whole setup—the organization, the office-bearers, the constitution, the money, the symbol.

The rebels claim the legislature party because they have the MLAs. The Mamata camp still controls the organization. They’ve already started dissolving committees and other structures across West Bengal, trying to restructure everything.

Political observers are looking back. They’re comparing this to the Shiv Sena split with Eknath Shinde in 2022. Or the NCP split with Ajit Pawar in 2023. In those cases, the fight went all the way to the Election Commission of India, trying to figure out who was the real party.

In the NCP case, the ECI eventually backed Ajit Pawar’s side, recognizing them as the real party, based on both organizational and legislative support.

The TMC situation is different, but the pattern is there.

Can the rebels just grab the TMC symbol? Not right away. Being recognized as a legislative group inside the Assembly isn't the same as being the official political party recognized by the Election Commission. They have to prove they control the actual organization, the constitution stuff.

Right now, the Mamata Banerjee side still controls the machinery.

What happens next?

It feels like we’re heading toward two separate centers of power inside the same name. One side, Mamata’s side, controls the organization, the brand. The other side, Banerjee’s side, controls the numbers in the Assembly and the Speaker recognition.

The next few weeks are going to be messy. It’s going to involve the Speaker, the Election Commission, maybe even the courts figuring out who actually controls the party.

For now, the rebels have the legislative muscle. But whether an expelled MLA can actually take over the entire TMC as the political entity? That’s a whole different story. It won't be just about the numbers. It’ll be about the institutions and the law.