Past analyses of organizational failure and success include studies of traditional social movements (Sandell, 2001;Stern, 1999), interest organizations Lowery, 1995, 1997;Haider-Markel, 1997;Nownes and Lipinski, 2005), and new social movements (Edwards and Marullo, 1995;Minkoff, 1993Minkoff, , 1997. Most of these, however, focus exclusively on factors outside the organization' s control or on organizational design and strategy. Some explore hypotheses derived from organizational ecology such as density dependence or the liabilities of newness and smallness, but do not investigate how successful design or leadership may help overcome such liabilities. Conversely, studies that focus on organizational design often fail to take into account how environmental factors limit the options available to organizational leaders. This article argues, and offers findings to support, that neither approach is sufficient to understand organizational survival; factors both outside and within the organization' s control contribute crucial pieces to the puzzle.Note: I thank Roger A. Lohmann, Per Selle, and the anonymous reviewers for invaluable comments on previous drafts.