The recent release of Aadhaar saturation data from Bihar has created a political storm, exposing a puzzling phenomenon: in some Muslim-majority districts, the number of Aadhaar cards issued exceeds the total population. In Kishanganj (126 per cent saturation), Katihar (123 per cent), Araria (123 per cent), and Purnia (121 per cent), there appear to be over 120 Aadhaar cards per 100 residents. This anomaly has raised suspicions about identity duplication, illegal immigration, and political manipulation of voter rolls, especially with Bihar heading into a critical election season.
At the heart of the debate is a larger national dilemma: What is the role of Aadhaar in verifying identity, and should it be a marker of citizenship?
Seemanchal’s Surplus Aadhaar: A Statistical Paradox
The Seemanchal region of Bihar shares borders with West Bengal and Nepal, lying not far from Bangladesh. Known for its socio-economic backwardness and high Muslim population (ranging from 38 per cent to 68 per cent across districts), the region has long been discussed in security circles as a vulnerable area for cross-border infiltration. Against this backdrop, the Aadhaar data is especially jarring. Aadhaar, a biometric-based identity system, was designed on the premise of one individual, one unique ID. So, how can a district with 100 people have 120+ Aadhaar cards?
There are three possible explanations:
Migration mismatch—If people move to a new district or state without updating their demographic records, they may retain Aadhaar addresses in both locations, resulting in duplicate entries in district-level data.
Data errors or estimation gaps—The population base may be outdated (based on the 2011 Census), while Aadhaar numbers are current, leading to mismatched ratios.
Fraudulent or unauthorized issuance—This is the most politically explosive explanation: Aadhaar cards issued to non-citizens, particularly undocumented immigrants from Bangladesh or Nepal, enabled through forged documents or local political patronage.
While UIDAI (Unique Identification Authority of India) has not officially confirmed any large-scale fraud in Bihar’s Aadhaar issuance, the figures do demand further investigation.
Opposition’s Contradictory Stance: Aadhaar as Tool or Threat?
Interestingly, political parties critical of the BJP have adopted a contradictory line on Aadhaar. On one hand, the Rashtriya Janata Dal (RJD) and Congress have vocally opposed the use of Aadhaar in the Election Commission’s Special Intensive Revision (SIR) process, arguing that it is discriminatory, exclusionary, and unfit to prove citizenship. Tejashwi Yadav even called a Bihar bandh in protest.
Yet, some of the same parties have previously advocated for linking Aadhaar to voter IDs, ostensibly to eliminate duplicates. Critics argue that their resistance now stems from a desire to protect a voter base that might include individuals with questionable citizenship status. This has prompted BJP-aligned voices to claim that the left-liberal and opposition ecosystem is subtly pushing to establish Aadhaar as a citizenship document not to protect genuine residents, but to legalize illegal immigrants in sensitive border districts.
West Bengal’s Parallel Battle: Mamata’s Aadhaar Conflict
The Aadhaar controversy in Bihar has reverberated into West Bengal. In 2024, Chief Minister Mamata Banerjee alleged that mass Aadhaar deactivations were part of a BJP plot to disenfranchise Muslims, Dalits, and OBCs. She went so far as to propose issuing a state-level identity alternative to Aadhaar, an idea swiftly rebuffed by the center as unconstitutional.
Districts like Malda and Uttar Dinajpur mirror the socio-demographic patterns of Seemanchal and face similar scrutiny regarding illegal immigration. For years, the BJP has accused Mamata’s Trinamool Congress of aiding and abetting illegal immigration for electoral gain. While these claims are politically motivated, they tap into an undercurrent of genuine anxiety over identity documentation, national security, and border integrity.
The Election Commission’s Tightrope Walk
Caught in the middle is the Election Commission of India. In its ongoing voter roll revision exercise, Aadhaar is not accepted as proof of citizenship correctly, since Aadhaar is an identity document, not a nationality certificate. In districts like Kishanganj and Araria, however, many residents lack birth certificates, school records, or domicile proofs, making them vulnerable to exclusion from the rolls.
This has led to a paradox: Aadhaar is everywhere but proves nothing. The same document that the government aggressively promoted as a universal ID is now deemed inadequate for the very electoral rolls it sought to clean up. For vulnerable populations, especially poor Muslims in border areas, this is a double bind: they’re under suspicion for having Aadhaar but also risk disenfranchisement without it.
Citizenship, Identity, and the Need for Clarity
The Bihar Aadhaar saturation mystery is a microcosm of larger national questions:
- Should Aadhaar be linked to citizenship?
- Can it be used to verify electoral eligibility?
- Are opposition parties defending civil rights or shielding electoral irregularities?
- Is the BJP weaponizing Aadhaar anomalies to stoke anti-immigrant sentiments?
Without transparent audits, data rectification, and a well-communicated policy framework, the debate will continue to polarize. What’s needed is a clear legislative demarcation: Aadhaar as a welfare-linked ID must be distinct from citizenship verification mechanisms like the National Population Register (NPR) or National Register of Citizens (NRC).
More Than a Number Game
The excess of Aadhaar cards in Bihar’s Seemanchal region is not just a data quirk; it is a warning bell. Whether it points to systemic errors, bureaucratic inertia, or deliberate misuse, the implications are far-reaching. In an era where identity defines access to welfare, to voting rights, to national belonging, clarity and trust in identification systems are paramount.
As the Bihar elections approach and the 2026 Census looms, the Aadhaar mystery could become a pivotal flashpoint linking issues of migration, demography, and democracy. For now, it remains a riddle wrapped in politic
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