Hundreds of millions of votes cast, more than six weeks of polling, and billions of dollars spent: India on Tuesday will declare a new leader after a mammoth nationwide election that has become a referendum on the last decade of leadership by Prime Minister Narendra Modi. His powerful right-wing Bharatiya Janata Party (BJP) is seeking a supermajority in the lower house of parliament – or Lok Sabha – a goal which, if successful, would give it an unstoppable mandate to further...