The count covers Assembly constituencies in West Bengal, Tamil Nadu and Puducherry, as well as the Nagaon Lok Sabha constituency in the state of Assam.
In Tamil Nadu, counting is under way in the Madurantakam and Dharapuram (SC) constituencies, where the by-elections were held on October 6.
In the West Bengal constituencies reported by the sources, the process began under tight security. Postal ballots and electronically transmitted ballots were examined before the votes recorded by EVMs.
According to the Hindustan Times, the West Bengal constituencies include Nandigram and Rejinagar. However, the available material does not clarify whether the different sources are describing the same set of constituencies or different areas.
In Assam, The New Indian Express reported that Bharatiya Janata Party candidate Devasish Sharma was leading by more than 36,000 votes in Nagaon at the time of publication.
The same outlet also reported that Vijay's Tamilaga Vettri Kazhagam party was leading in Dharapuram and Madurantakam during the count.
The indications of leads remain provisional trends and do not certify the final outcome in the constituencies. The sources provided do not report the final results or vote totals for all the constituencies.
According to information reported by the Hindustan Times and The Hindu, the Election Commission of India is overseeing the process at designated counting centres.