Puducherry registered 78 per cent polling in the election to the lone Lok Sabha seat Thursday.
Official sources said the Thattanchavady Assembly segment, which also simultaneously went to a by-poll, registered 73 per cent.
The preliminary figures were as of 6 PM at the close of polling, they said adding it was likely to go up.
The total voters strength in the Union Territory is 9,73,160 voters.
Eighteen contestants including former Speaker V Vaithilingam (Congress) and doctor turned politician K Narayanasamy (AINRC) were in the fray in Lok Sabha poll.
The by-election in Thattanchavady Assembly segment involved a fight among eight contestants, including the AINRC candidate P Nedunchezian and DMK candidate K Venkatesan.
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