Storming the last Opposition citadel in the east, the BJP Monday trounced the ruling TMC in West Bengal to end Mamata Banerjee’s 15-year rule and returned to power in Assam at the head of a landslide for a third consecutive term. Tamil Nadu delivered the other stunning verdict with actor-turned-politician Joseph Vijay’s TVK, a new entrant nearing the halfway mark, surprising the Dravidian majors and toppling the DMK-led government’s five-year rule under M K Stalin. Kerala opted for change, voting in the Congress-led UDF to end the run of the LDF led by Pinarayi Vijayan , the last Left government in the country. The Union Territory of Puducherry reposed faith in the NDA comprising the All India NR Congress and the BJP. The one unmistakable message from the results of the Assembly elections was that of a yearning for change. And the incumbents, from the TMC in Bengal to D to DMK to LDF, bore the brunt. Only Assam and Puducherry bucked the trend.…