Fresh discord within the INDIA bloc in West Bengal has once again laid bare the enduring fragility of opposition unity in a state where political realignments have historically been driven by electoral arithmetic rather than ideological common ground. The latest flashpoint centres on senior Congress leader Adhir Ranjan Chowdhury, who reportedly refused to soften his criticism of Chief Minister Mamata Banerjee despite signals of improving ties among opposition parties at the national level.

Chowdhury's Grievance and Its Roots

Chowdhury cited years of what he described as political poaching and intimidation by the All India Trinamool Congress (TMC), maintaining that his lived political experience left little room for reconciliation with Banerjee's party. Some analysts attribute his remarks, made on Wednesday, partly to personal grievance: he was replaced as West Bengal Pradesh Congress Committee (WBPCC) president shortly after his defeat in the 2024 Lok Sabha election. His tenure had been defined by a confrontational posture toward the TMC, and his exit was widely seen as a bid by the Congress to reorganise and broaden its coalition-building options in the state.

His successor, Subhankar Sarkar, is reportedly regarded as more inclusive and open to partnerships aimed at checking the Bharatiya Janata Party (BJP)'s expansion in Bengal — a contrast that underscores the internal fault lines the Congress must navigate.

West Bengal's Long History of Shifting Alliances

The current friction is not an aberration; it is consistent with a decades-long pattern. Before 1977, the Congress was the dominant political force in West Bengal, returning to uninterrupted power in 1972 after intermittent periods of President's Rule. The Left Front, led by the Communist Party of India (Marxist), then swept to a historic victory in 1977, beginning a rule that would last approximately 34 years. Congress became the principal opposition, and the two camps remained in intense confrontation for much of that period.

It was within this environment that Mamata Banerjee rose through the Congress ranks before growing frustrated with what she perceived as the party's failure to mount an effective challenge to the Left. In 1998, she broke away to establish the Trinamool Congress, alleging that sections of the Congress leadership had developed a covert understanding with the CPI(M) that allowed Left dominance to persist.

The Alliance Merry-Go-Round

What followed was a series of alignments that would have seemed implausible at the time each one began. Banerjee initially allied with the BJP, then a minor force in Bengal, describing it as a natural partner in the fight against communist rule. As political conditions shifted, she distanced herself from the BJP and moved closer to the Congress, with the Left Front serving as a shared adversary. By the late 2000s, the Congress–TMC electoral understanding proved decisive, buoyed by widespread public anger over incidents in Singur and Nandigram.

Once in power, however, numerous Congress leaders and workers crossed over to the Trinamool, significantly weakening the Congress's organisational base — precisely the period Chowdhury now points to when accusing Banerjee of dismantling the Congress machinery in the state. Even the communists levelled similar allegations, and that shared grievance eventually produced what was once considered unthinkable: a Congress–Left alliance, forged on shared weakness and a common objective to resist both TMC dominance and BJP expansion.

Why Opposition Unity Remains Elusive

As the BJP expanded its footprint eastward, the political equation in West Bengal shifted again, prompting Banerjee to reach out to erstwhile rivals. This cyclical pattern illustrates a fundamental tension in Bengal politics — and indeed in Indian opposition politics more broadly — between political memory and political necessity. Parties that have inflicted deep wounds on each other are repeatedly asked to subordinate those grievances to immediate electoral interests.

The result, according to some observers, is an opposition coalition perpetually vulnerable to eruptions from within. This comes amid a broader national debate about whether the INDIA bloc can maintain coherence as state-level compulsions and individual leaders' histories pull its constituent parties in divergent directions. With West Bengal assembly elections on the horizon, the pressure to present a unified front will only intensify — as will the competing pressures that make unity so difficult to sustain.