SSR vs SIR explained: How Election Commission’s voter list revision differs across 17 states
New Delhi: The Election Commission of India has ordered a Special Summary Revision of electoral rolls in 17 states and Union Territories with January 1, 2027 set as the qualifying date. The exercise comes as the Commission continues its Special Intensive Revision (SIR) in other parts of the country.

Although both exercises aim to keep voter lists accurate, they follow different procedures. SSR focuses on updating the existing electoral roll, while SIR involves preparing the list afresh through a more detailed enumeration process.
The distinction matters for voters because the steps required to verify their details and ensure their names appear on the final list are different under the two exercises.
What is Special Summary Revision (SSR)?
SSR is a process through which the Election Commission updates the existing voter list rather than preparing an entirely new one. The exercise includes checking voter details, adding eligible citizens whose names are missing, correcting errors and identifying duplicate entries, deceased voters and those who have permanently shifted.
Both Level Officers may conduct house-to-house verification as part of the pre-revision work. The ECI’s October 15 order also directs Electoral Registration Officers to publish an integrated draft roll and invite claims and objections before finalising the list.
Voters can use different forms depending on the purpose. Form 6 is for inclusion in the electoral roll while Form 6A is meant for overseas electors. Form 7 can be used to raise objections or seek deletion, and Form 8 covers shifting, corrections and other specified changes.
SSR schedule and important dates
The Election Commission’s schedule sets November 12 as the date for publishing the draft electoral roll. Voters can submit claims and objections between November 12 and December 11, with their disposal scheduled by December 28.
The final electoral roll is due to be published on January 4, 2027. The exercise will also accept advance applications from people who become eligible to vote on April 1, July 1 and October 1, 2027.
How is SIR different from SSR?
The main difference is that SIR involves a fresh enumeration exercise while SSR updates the existing electoral roll. Under SIR, enumeration forms are distributed to electors and BLOs carry out the prescribed verification process before the draft roll is prepared.
Names are then subject to the claims-and-objections process. Voters must follow the applicable instructions to ensure their details are verified and their names appear on the revised list.
Another key difference concerns the reference rolls. The SIR exercise uses electoral rolls from 2002-04 as its baseline whereas SSR uses the last finalised electoral roll as the starting point. The applicable documentation and verification requirements under SIR depend on the Election Commission’s specific instructions for the exercise.
