Around 42% voters came out to cast their votes till 1 pm on Monday during the ongoing polling for the Tamil Nadu Assembly elections.
Meanwhile, over 45% electorates cast their votes till 1 pm in Kerala.
Earlier in the day, Prime Minister Narendra Modi urged voters in Tamil Nadu, Puducherry and Kerala to vote in record numbers.
"Urging all voters in Tamil Nadu, Kerala and Puducherry to vote in record numbers today and be a part of this festival of democracy," he tweeted.
In response to the Met Department prediction of showers in Puducherry, the Election Commission has raised pavilions in front of polling stations to provide protection from elements for voters.
Tamil Nadu is going to polls on 233 seats, with voting for Aravakurichi constituency having been deferred.
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Kerala would see polling for its 140 seats assembly. In Puducherry, 30 seats would go for polls.
Counting of votes for Tamil Nadu, Puducherry, Kerala, West Bengal and Assam Assembly elections will be held on May 19. The counting of votes in Aravakurichi and Thanjavur Assembly seats of Tamil Nadu will take place on May 25.