Like the huge herds on the unending plains of the Serengeti, they migrated back to where they were at the turn of the season. Jumping from BJP to the Trinamool Congress has become a general political trend in West Bengal since Mamata Banerjee’s return to power. It, of course, is the reverse of the pre-election season. The unique ways BJP workers at the grassroots level are adopting to join the TMC are the talk of the town.