What happened

A Trinamool Congress Rajya Sabha MP resigned after meeting Bharatiya Janata Party leader Bhupender Yadav in Delhi. The resignation was described as the fourth Trinamool Congress Rajya Sabha exit after the party’s defeat in the West Bengal Assembly election.

Mamata Banerjee responded by asking people facing pressure from central agencies such as the Enforcement Directorate and the Central Bureau of Investigation to leave the party before 21 July, taking their belongings with them. She said those who stayed would remain her strongest base and could help rebuild the party.

Background and earlier position

Trinamool Congress has used 21 July as a major political mobilisation date through its Martyrs’ Day rally in West Bengal. Mamata Banerjee also compared the present phase to the party’s earlier reset in 1997.

The resignation episode reflects a larger pattern in Indian party politics: after electoral setbacks, legislators may shift sides, party cohesion becomes fragile, and allegations about pressure from central agencies become politically charged.