Overview On 1 March 2026 , Nitin Nabin , national president of the West Bengal BJP, alleged that more than 50 lakh alleged infiltrators were removed from the voter list after the Special Intensive Revision (SIR). The statement came during a rally in Cooch Behar where the BJP launched its Poriborton Yatra . Key Developments Election Commission’s post‑SIR rolls show 63.66 lakh names deleted, reducing the electorate from 7.66 crore to 7.04 crore (≈8.3% reduction). Over 60.06 lakh voters placed in the “ under adjudication ” category, pending court scrutiny. BJP accuses TMC chief minister Mamata Banerjee of shielding infiltrators and facilitating fake documents. Additional 5.46 lakh deletions recorded through Form‑7 applications. Important Facts The SIR exercise, spanning 116 days, is the first intensive revision since 2002. The draft rolls released on 16 December 2025 had already cut the electorate to 7.08 crore, deleting over 58 lakh names for reasons including death, migration, duplication, and untraceability. Subsequent hearings and objections led to the final figure of 63.66 lakh deletions. The “under adjudication” list reflects cases where voters have contested deletions; these will be examined by courts, potentially altering constituency‑level voter composition ahead of the upcoming Assembly elections. UPSC Relevance Understanding the mechanics of Election Commission ’s roll‑cleaning exercises is crucial for GS 2 (Polity) and GS 3 (Security) topics such as electoral integrity, voter eligibility, and internal security narratives. The political rhetoric around “infiltrators” ties into debates on illegal immigration, citizenship laws, and their electoral impact—areas frequently examined in GS 3. Additionally, the role of regional parties like TMC and national parties’ campaign strategies (e.g., Poriborton Yatra ) are pertinent to GS 2 questions on federalism and party politics. Way Forward As the judicial review of the “under adjudication” cases proceeds, the final voter list will shape constituency demographics and could influence the outcome of the 2026 West Bengal Assembly elections. Aspirants should monitor subsequent EC notifications, court rulings, and political responses, especially any policy proposals concerning citizenship verification and electoral reforms.