Barring a few minor incidents, polling went off peacefully, Chief Electoral Officer Rajesh Lakhoni said, adding one person was arrested for trying to distribute money.
In 2011 assembly polls, the turnout was 78.12 per cent.
Many constituencies recorded over 80 per cent polling which include Kulithalai in Karur district with 87.55 per cent, Pennagaram in Dharmapuri district 87.61 per cent and Edappadi in Salem district 85.7 per cent, Lakhoni said.
Harbour segment here polled the lowest at 55.27 per cent.
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Lakhoni, however, indicated that there may be some changes in the final tally on the overall turnout since the final figure is being collated in a few constituencies which include Kolathur and Villivakkam here.
He said in urban regions like Chennai, the turnout was comparatively lower and hence the overall average was low.
Answering a question, he said whoever had come to the booths before 6 pm were allowed to vote and rains did not necessitate extension of time to vote.
The Election Commission had earlier said at Delhi that the cash seized from three containers belongs to the State Bank Of India but it will not be handed over to the bank before a proper probe by Income Tax Department.
On cash seizures, Lakhoni said of the Rs.105.2 crore seized so far, Rs.47.7 crore has been returned to its lawful claimants following submission of supporting documents.
To a question on repolling, he said it would be decided after scrutiny of observers' reports and if necessary.