TVK supporters celebrate in Chennai, Monday. (PTI) EACH of the verdicts in West Bengal, Tamil Nadu, Assam and Kerala is distinctive. But taken together, read with their record turnouts, they send a powerful message: the young voters, restless and restive, worried about their present, and wanting a better future, are asserting politically for change. Many of them are unencumbered – or shrugging – the burdens of the past. In West Bengal, the first-time voter this year would have been an infant when the feisty Mamata Banerjee stormed the Red Fortress in 2011 or transformed the Brigade Parade Ground into a poster of resistance. In Tamil Nadu , the under- 30s, fatigued by the DMK-AIDMK binary, which is all they have seen, found in actor Vijay’s TVK a new vehicle that could drive down the road to change.…