New Delhi, July 24: The Election Commission today told the chief electoral officers of all the states heading for elections, including Gujarat, to undertake an ‘‘intensive’’ door-to-door revision of electoral rolls.

In large states like Gujarat, this process is expected to take at least three months while in smaller states like Himachal Pradesh, it could take less than two months.

While today’s meeting was called much before the Gujarat Assembly was dissolved, sources pointed out that the state’s preparedness for polls, in the changed situation, also came up for scrutiny. The EC’s final decision will now depend on how ready the state is — with regard to revised voters lists, photo identity cards and the law and order situation.

The EC, at its stock-taking meeting with state chief electoral officers, pointed out that the voters lists have always been intensively revised prior to polls in any state.

In keeping with this practice, Madhya Pradesh, Delhi, Nagaland, Tripura, Mizoram — which are set to go the polls next year — and Gujarat, where the BJP wants early elections, will have to revise their lists.

According to officials, this would mean that a massive number of staff would have to be trained in each state for door-to-door visits to those listed in the present voters’ lists.

Today’s meeting was headed by Chief Election Commissioner J.M. Lyngdoh and Election Commissioners T.S. Krishnamurthy and B.B. Tandon. It is being seen as the first step to taking a final decision on setting a date for elections in the states, including Gujarat, which was represented by its chief electoral officer, Gurcharan Singh.