As the second phase of the Special Intensive Revision (SIR) of electoral rolls gets under way, it is unclear how the Election Commission of India (ECI) plans to use the “pre-mapping” exercise done by each State before the rollout of the gigantic project.

The pre-mapping exercise entailed matching in advance electors who were already present in the voter lists after the previous SIR with those in the current list.

In most States, the last SIR was conducted between 2002 and 2004, and the current lists are the ones which are available as of October 2025.

In the second phase, SIR is being conducted across 12 States and Union Territories, including poll-bound Tamil Nadu , Kerala , and West Bengal . The first phase was done in Bihar, which led to the deletion of nearly 69 lakh name

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