For Mamata Banerjee, the way to Writer’s Building—office of the West Bengal CM—and now Nabanna, the temporary seat of governance, had gone through the corridors of Rail Bhavan. Unapologetic about using her two stints as railway minister for her state, new trains, railway lines and projects for Bengal went into the making of her highly emotive ‘Ma, Maati, Maanush’ campaign that ended the 34-year Left Front rule. Eight years since, as she takes on the Narendra Modi government to “save the Constitution”, she seems to be looking at catapulting herself to the PMO in Delhi from Esplanade in Calcutta—site of her three-day sit-in against CBI “highhandedness” and a “saffron attack” on Bengal.