He added that Thursday's voting was "critical ... because some of the sensitive areas in the country are going to the polls".
In Gurgaon, abutting Delhi, long queues were seen even in what is known as New Gurgaon, dominated by high-rise condominiums and shopping malls.
Voters praised the "very organised" facilities, with senior citizens being given preference so that they did not have to stand in queues.
One voter who showed a flight ticket was allowed to jump the queue and vote.
Said Tishita Chopra, a housewife: "What impressed me were the excellent facilities and helpfulness of police and election personnel. Things were really working like clock-work."
