In less than forty years of its existence, the Bharatiya Janata Party has become the world's largest political party and continues to go from strength to strength in Indian politics. Although its historic rise may seem organic to some, there is much internal deliberation and planning that has aided the growth of this 180-million-member organization. The Architect of the New BJP uses in-depth research and concrete examples to explain how the BJP has transformed over the decades. It reveals lesser-known contributions, like Prime Minister Narendra Modi's experiments with traditional methods of party-building, his keen eye for detail and the different innovative methodologies to expand the party. Ajay Singh not only examines the past of the party, including the vision of its founders, but also provides a glimpse into the future of the party. Based on extensive interviews with many party workers, leaders and observers, this is the story of how the veterans of this cadre-based party, appreciating its limitations, developed a unique Indian model that eventually transformed the BJP into the election-winning machine it is today.