A dramatic reshaping of India’s political landscape is underway, with fractures within opposition ranks potentially bringing the National Democratic Alliance (NDA) closer to the parliamentary strength required for major constitutional reforms. The changing arithmetic has reignited discussions around long-pending measures such as delimitation, the implementation of women’s reservation and the proposed One Nation, One Election framework, all of which require substantial legislative backing.
Just months ago, a Constitutional amendment bill linked to delimitation and the women’s reservation framework failed in the Lok Sabha after falling short by 54 votes. However, the political developments across West Bengal and Maharashtra have triggered fresh calculations about whether the ruling alliance can bridge that gap.
The most consequential development has emerged from West Bengal, where reports indicate that 20 of the 28 Trinamool Congress MPs have broken away and merged with the Nationalist Citizens Party of India (NCPI), a formation expected to align with the NDA.
If counted alongside the NDA, the rebels significantly strengthen the ruling alliance’s position in the Lok Sabha. Simultaneously, Maharashtra has emerged as another potential source of parliamentary gains. Reports suggest that six MPs from Shiv Sena (UBT) are on the verge of joining the Eknath Shinde-led Shiv Sena, further bolstering the NDA’s strength. Together, these developments could add 26 MPs to the NDA’s effective support base.
The numbers behind the constitutional battle
The Lok Sabha currently has 540 sitting members, with three vacancies in the House of 543. Under constitutional provisions, amendment bills require support from two-thirds of members present and voting. At present, the NDA’s strength, including the Trinamool Congress breakaway faction, is estimated at 318 MPs, while the Opposition accounts for 184 MPs and around 38 members remain outside both blocs.
During voting on a Constitutional amendment bill earlier this year, 528 members were present, making the effective two-thirds mark 352 votes. The government secured 298 votes, falling short by 54 votes. With the addition of the 20 Trinamool rebels and a potential six Shiv Sena (UBT) defectors, the NDA’s support base could rise to 324, significantly reducing the deficit.
DMK emerges as a potential game-changer
A crucial variable in the evolving equation is the DMK. Following its reported split from the INDIA bloc, the party has emerged as a potential swing player in future constitutional votes. Political source has been informing that the discussions between the NDA and the DMK are being closely watched. If the DMK’s 22 Lok Sabha MPs were to support the government on specific legislative issues, the NDA-backed tally could rise to 348 votes. That would leave the ruling alliance just six votes short of the threshold achieved during the earlier constitutional vote.
The significance of that figure has fuelled speculation about whether smaller regional parties and non-aligned MPs could become decisive in determining the fate of future constitutional legislation.
Delimitation and One Nation, One Election back in focus
The altered political landscape has revived discussion around measures that require constitutional amendments. Among them is the delimitation exercise, a politically sensitive issue that would redraw parliamentary constituencies and has major implications for representation across states. The women’s reservation framework also remains tied to the completion of delimitation, making parliamentary numbers critical to its implementation.
Another proposal being closely watched is the One Nation, One Election initiative, which seeks to synchronise Lok Sabha and Assembly polls across the country. Like delimitation-related legislation, the proposal would require constitutional amendments and broad parliamentary support.
Rajya Sabha equation also narrowing
The NDA’s prospects are not limited to the Lok Sabha. In the Rajya Sabha, where the current effective strength is 245 members, a two-thirds majority would require 164 votes. The NDA currently holds around 150 seats. Support from the DMK’s eight Rajya Sabha members could raise that tally to 158, leaving the alliance six short of the required mark. With upcoming vacancies and support from smaller parties, political observers believe the ruling alliance could further improve its position in the Upper House.
Monsoon Session under spotlight
As Parliament prepares for the Monsoon Session, the focus is increasingly shifting from electoral politics to legislative arithmetic. What was once viewed as a distant possibility is now being discussed as a realistic political objective. Whether the NDA can convert shifting loyalties and opposition fragmentation into a constitutional majority remains uncertain, but the evolving numbers have undeniably altered the national political conversation.




