Purbasthali Dakshin is a rural assembly constituency in Purba Bardhaman district, situated along the Bhagirathi river in the eastern part of the district. The constituency is largely agricultural, with paddy farming and riverside livelihoods shaping the local economy. It is part of the Katwa subdivision and has been held by the Trinamool Congress in recent elections.
In the 2021 West Bengal Assembly elections, the seat was won by Swapan Debnath of the All India Trinamool Congress (AITC). He secured victory over the nearest rival from the Bharatiya Janata Party (BJP) by a margin of 17,410 votes. The result reflected the broader political alignment in the constituency and underlined the dominant party's organisational strength in the area.
Flood management and erosion along the Bhagirathi river bank are key concerns for Purbasthali Dakshin's riverside communities. Agricultural welfare, crop pricing and irrigation access are persistent demands. Rural road connectivity, healthcare access and drinking water supply are important infrastructure priorities. Employment for youth, welfare scheme delivery and local governance are also significant political issues. The 2026 West Bengal Assembly elections are shaping up as a high-stakes contest between the ruling All India Trinamool Congress (AITC), led by Chief Minister Mamata Banerjee, and the Bharatiya Janata Party (BJP), which is seeking to make major inroads into the state. With anti-incumbency, law-and-order concerns and welfare delivery all playing a role, every constituency is expected to be closely watched. Trinamool Congress has fielded Swapan Debnath for the 2026 election.