American political scientists have paid very little attention to our northern neighbor and leading trading partner. Yet as the following essays make clear, Canada poses a number of important issues of concern to scholars of American and comparative politics, including the difficulty of building coalitions for institutional reform, the development of minority group identities, and the political dynamics of direct democracy instruments such as referenda. In the following essays, three Canadian political scientists examine the constitutional crises that have repeatedly engulfed Canadian politics over the last quarter century. These crises had their most important root in efforts to find a new constitutional order that would meet the demands of the francophone-majority province of Quebec for increased autonomy, but the evolving process has attracted more participants and more demands. By the time of last October's referendum on a package of constitutional reforms known as the Charlottetown Accord, the constitutional agenda had become so overloaded that it sank under its own weight. Peter Russell's essay traces the tortuous history of Canadian negotiations over constitutional reform. Stéphane Dion examines the ebbs and flows of Quebec nationalism.