DMK burned the Bill in April. Five months later, its leadership is being quietly courted - not for a yes vote, but for an abstention.

A two-thirds majority isn't one number - it's a moving target Article 368 sets the bar for a constitutional amendment at a two-thirds majority of members "present and voting," plus a majority of the House's total membership.

That phrase - present and voting - is doing more work in this story than any political alliance is. It means the threshold isn't fixed. It moves depending on exactly who shows up and who deliberately doesn't. Why an abstention is worth more than it looks This is the mechanism DMK's negotiation is built around.

If DMK's 22 Lok Sabha MPs simply don't vote, the denominator for "two-thirds of members present and voting" shrinks - and the government's actual target falls from the roughly 352 needed in April to around 346. An abstention costs DMK nothing politically that a "no" vote wouldn't, but it hands the government a smaller number to hit.

This is precisely why the outreach to DMK isn't framed as persuasion on the merits of the Bill - Kanimozhi Karunanidhi's language about protecting "Tamil Nadu's interests" and finding a "middle path" is not a vote being negotiated, it's an absence being negotiated.

Crossovers do something Article 368 doesn't require but the math needs anyway Twenty rebel TMC MPs and six Shiv Sena (UBT) crossovers could lift the NDA's tally toward 329 - but only if Speaker Om Birla certifies these switches as valid, which itself sits in a separate constitutional space: the Tenth Schedule's anti-defection rules, which the Speaker's ruling effectively tests.

Even at 329, the government remains below any realistic two-thirds mark without NCP (SP)'s eight votes or further abstentions. The story's real subject, in other words, isn't ideology or federal grievance - it's that a two-thirds threshold turns political negotiation into a genuine engineering problem, where every crossover, abstention and rebel MP is a variable in an equation, not a persuaded voter.

What this reveals about Article 368 itself The framers set the two-thirds bar deliberately high to make constitutional change require broad consensus, not a bare parliamentary majority. What this episode shows is that "broad consensus" can be functionally substituted by arithmetic engineering around the "present and voting" clause - a route the text doesn't forbid, because it was never designed to anticipate how precisely modern coalition politics would learn to count absences as assets.

That gap between the rule's intent and its exploitable mechanics is exactly where this Bill's second attempt is being fought. For GS2, the exam-relevant insight isn't which party wins - it's that Article 368's special majority requirement, meant to be a check on hasty constitutional change, is currently being treated as a solvable optimisation problem rather than a genuine consensus threshold.