India's political landscape has undergone a dramatic shift over the past two weeks, creating a situation that few would have predicted even a month ago. The impact of these developments could be felt during the upcoming Monsoon Session of Parliament, where the BJP government at the Centre is expected to renew its push for key constitutional amendments, including legislation linked to women's reservation in Parliament and delimitation.
The discussion has gained momentum after bills failed in the Lok Sabha earlier this year, falling short by 54 votes. With several of the Opposition parties now facing internal divisions and defections, the parliamentary arithmetic appears to see an upheaval.
How Defections Are Benefitting NDA In Parliament?
Much of the change stems from the political turmoil within the Trinamool Congress (TMC) in West Bengal and growing uncertainty within Uddhav Thackeray’s Shiv Sena faction in Maharashtra.
Following TMC's defeat in the West Bengal Assembly elections, the party has been grappling with internal unrest. The biggest impact has been visible in Parliament, where 20 of its 28 MPs have broken away from the party.
The rebel Lok Sabha MPs have formed a separate group and joined an obscure Tripura-based outfit known as the Nationalist Citizens Party of India (NCPI), which is expected to align with the BJP-led NDA.
A similar situation is unfolding in Maharashtra. Political circles are abuzz with reports that six of the nine Lok Sabha MPs belonging to Uddhav Thackeray's Shiv Sena faction may switch sides and join the Shiv Sena camp led by Maharashtra Deputy Chief Minister Eknath Shinde.
If these political realignments materialise, the NDA's position in Parliament could become significantly stronger. The ruling alliance already enjoys a comfortable majority, but constitutional amendments require a much higher threshold.
Under Article 368 of the Constitution, most amendment bills need the support of a majority of the total membership of each House as well as the backing of at least two-thirds of members present and voting. That requirement has long been the biggest hurdle for the government on politically sensitive proposals such as delimitation.
The recent political churn has therefore sparked speculation that the NDA may be moving closer to securing the numbers required for the passage of legislation related to amending the Constitution.
Understanding The Lok Sabha Arithmetic
The Lok Sabha currently has 543 seats, with three vacant seats. This means support from 360 members is needed to comfortably cross the two-thirds mark. At present, the NDA's effective strength in the Lok Sabha stands at around 318 MPs. The Opposition accounts for roughly 184 members, while around 38 MPs belong to parties outside the NDA and the INDIA bloc.
When the delimitation-related bill was defeated earlier this year, the government was estimated to be about 54 votes short of the required strength. If the 20 rebel TMC MPs and six potential defectors from Uddhav Thackeray's camp are added to the NDA's side, that gap could shrink substantially, and the NDA tally could reach 344.
Another important development is the breakdown in ties between the DMK and the Congress. According to political sources, channels of communication between the Centre and the DMK remain open. If the Tamil Nadu-based party extends support or even adopts a neutral stance on a future vote, the government's position could improve further.
With the DMK's 22 Lok Sabha MPs potentially becoming a deciding factor, the NDA's tally could rise close to the required threshold, leaving only a small gap to bridge through support from smaller regional parties or abstentions by Opposition MPs.
The Search For The Final Numbers
Political observers believe the BJP's strategy is unlikely to rely solely on direct defections. Instead, the party may seek support from smaller regional outfits and parties that are not formally aligned with either the NDA or the INDIA bloc.
Several media reports suggest that the BJP’s broader parliamentary strategy involves a mix of opposition defections, party splits, issue-based support from regional players and strategic abstentions during voting. This approach reduces the need for the NDA to build an entirely new coalition while still improving its chances of crossing the constitutional threshold.
The Rajya Sabha Equation
The picture in the Rajya Sabha is equally important. A two-thirds majority in the Upper House requires the support of 164 members in the 245-member House. The NDA currently has around 148 MPs and is expected to improve its tally through ongoing Rajya Sabha elections and possible gains from bypolls triggered by resignations from Opposition parties.
If the alliance secures additional seats and also receives support or abstentions from parties such as the DMK and other regional players, the gap could narrow considerably. Strategists are also factoring in possible support or abstentions from parties outside both the NDA and the INDIA bloc, including groups such as the YSRCP, BJD and BSP.
What Could Happen Next?
If the NDA succeeds in assembling the required numbers in both Houses, the upcoming Monsoon Session could witness the return of major constitutional bills that appeared politically difficult just a few months ago.
Beyond women's reservation and delimitation, a stronger parliamentary position would also strengthen the government's ability to pursue other long-pending structural reforms, including the 'One Nation, One Election' framework.
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For now, the numbers are still evolving. But one thing is clear, the political equations in Parliament are no longer what they were at the start of the year, and that has opened up possibilities that seemed unlikely until recently.