10.97 lakh voters, Poll date May 13
Importance: Trinamool Congress chief Mamata Bannerjee's bastion. She began by contesting from adjoining Jadavpur where she defeated ex-Speaker and one time CPM heavyweight Somnath Chatterjee in 1984. But since 1991 she has made this seat her base, winning it five times continuously. In 2004 she was the only Trinamool candidate to win a seat. In a state where the Left Front has been winning with huge majorities for more than three decades, this seat, incorporating some of the poshest areas of Kolkata, remains an anti Left bastion. It is a reflection of the continuing urban dissatisfaction with the Left Front.
Political history: Since 1977, the Left Front has won the seat only twice - in 1980 and 1989. However, Mamata's margin of victory has been steadily reducing with each election.
A number of assembly constituencies like Sonarpur, Chowringhee and Alipore have been taken out, while other segments like Kasba, Behala West, Behala East and Port have been added. Delimitation has removed those segments where the Trinamool had done well in the recent panchayat and civic polls.
Our take: Mamata will face her sternest test this time. Apart from the disadvantage imposed on her by delimitation, her staunch anti industry position - as revealed during the Singur and Nandigram face offs with the state government - is unlikely to go down well with urban dwellers. The CPM is trying hard to label her an opponent of development. Even if she does win, her margin of victory may well be lower than ever before.