West Bengal chief minister Mamata Banerjee’s arrival in Delhi for a five-day visit to meet leaders of different Opposition parties has, yet again, triggered frenzied speculation on the possible recipe for a federal front to take on the BJP in the 2024 Lok Sabha polls. Riding high on her stupendous victory in Bengal despite the BJP’s visceral campaign, the Trinamool Congress chief wants to position herself as the fulcrum of Opposition unity; an altar that NCP supremo Sharad Pawar sought to covet exclusively until recently.