This symposium, ‘Conceptualizing New Governance Arrangements', takes up the challenge of refining governance theory to better integrate work in several disciplines, most notably politics, public administration and law. To this end, we argue for a theoretical framework that profiles three key dimensions of governance: institutional, political and regulatory. This framework, in our view, offers new insights into the nature and operation of various governance arrangements, and offers the potential to assess and measure change within such arrangements over time. After describing our methodology for selecting and analysing the case studies profiled in the symposium, we introduce each of the articles that apply our three-dimensional governance framework. These articles employ the framework to consider a variety of contemporary governance scenarios that vary widely by sector (environmental, climate change, forestry and education policy) and level of analysis (sub-national, national, and bi-national).