Working with data analysts, the team found more than 1,000 voters whose details including names, ages, and relatives’ names had matched perfectly in both Bihar and Uttar Pradesh rolls, with only addresses differing.

Thousands of others were listed with minor spelling or age variations, effectively holding two different Electoral Photo Identity Card (EPIC) numbers, which is a violation of electoral rules.

The report raised concerns over the Election Commission’s Special Intensive Revision (SIR), a 90-day exercise ordered in June to overhaul Bihar’s rolls ahead of the October–November polls.

While the Commission has argued that the claims and objections period is designed to address such issues, the investigation suggests that weeding out thousands of potentially bogus or duplicate entries within the timeframe could prove difficult.

Together, the INDIA bloc’s allegations and the independent findings are likely to heighten scrutiny of the Commission’s ability to deliver a clean and credible electoral roll in Bihar before the state heads to the polls.