The interest around the March 19 meeting in Calcutta between K. Chandrasekhara Rao and Mamata Banerjee, therefore, is understandable. It takes place at a time when regional political supremos have begun to position themselves yet again to deal with the emerging political landscape before the 2019 Lok Sabha elections. The recent bypolls in UP, where non-BJP parties came together to deal it a bitter blow, have added significance to the move. For the Trinamool Congress, given the BJP’s increasing presence in the neighbouring Northeast and its stunning victory in Tripura, a vantage point from where they audaciously declared their intention to grab power in Bengal, such talks have assumed extra piquancy. The meeting at Nabanna, the state secretariat building, between the Telangana CM and his West Bengal counterpart, sparked off speculation about Mamata’s much-touted ‘federal front’, its possible constituents and its viability. And the arc is widening—next week Mamata is embarking on a four-day trip to Delhi, to take part in a meeting of opposition parties called by NCP chief Sharad Pawar. The contours of the front would be discussed threadbare, and possible participants wooed.