By exploring the dynamic relationships between politics, policymaking, and policy over time, this book aims to explain why climate change mitigation is so political, and why politics is also indispensable in enacting real change. It argues that politics is poorly understood and often sidelined in research and policy circles, which is an omission that must be rectified, because the policies that we rely on to drive down greenhouse gas emissions are deeply inter-connected with political and social contexts. Incorporating insights from political economy, socio-technical transitions, and public policy, this book provides a framework for understanding the role of specific ideas, interests, and institutions in shaping and driving sustainable change. The chapters present examples at global, national, and local scales, spanning from the 1990s to 2020s. This volume will prove valuable for graduate students, researchers, and policymakers interested in the politics and policy of climate change.