This edited volume considers the extent to which the Obama presidency matched the promises of hope and change that were held out in the 2008 election. Contributors assess the character of change and, within this context, survey the extent to which there was enduring change within particular policy areas, both domestic and foreign. The authors combine empirical detail with more speculative assessment of the limits and possibilities of change amidst a very dense institutional landscape and in an era of intense political polarization. Some see significant changes, the full consequences of which may only be evident in later years. Other authors in the collection present a markedly different picture and suggest that processes of change were not only limited and partial but at times leading the US in directions far removed from the promises of 2008. The book will make an important contribution to the debates about the Obama legacy.