Institutions are norms that undergird organizations and are reflected in laws and practices. Scholars point towards the ‘stickiness’ of institutions as stubbornly persisting on the historical landscape. As institutions tend to persist, the related political, administrative, and social processes persist as well. Therefore, it is puzzling when perpetuating institutions change paths. This book unravels one such puzzle by examining the process of institutional change through the lenses of transformation in the ‘information regime’ in India by tracing the passage of the Right to Information (RTI) Act, 2005. Historically, in India, the norm of secrecy was entrenched within the state, perpetuating since colonial times. Yet, in 2005, the RTI Act was enacted heralding an institutional shift from the norm of ‘secrecy’ to the new norm of ‘openness’. What explains this institutional change? Based on new historical evidence overlooked in the mainstream literature, this book shows that the RTI Act was path-dependent on ideas of openness that emerged within the state since Independence. It argues that an endogenous policy discourse on enacting legislation on access to information had begun since Independence; it incrementally evolved and reached a ‘tipping point’ and, after surviving many political challenges, resulted in institutional change. Initially these ideas emerged gradually and incrementally as part of opposition politics, but eventually became part of mainstream politics. The book presents an alternate perspective to the mainstream narrative explaining the evolution of the RTI Act and makes theoretical contribution to the literature on institutional change.