In the years following World War II, the National Association of Manufacturers (NAM) regained the political effectiveness it had lost during the New Deal. This article analyzes NAM's resurgence within the context of the rising popularity and political strength of organized business in the postwar period. It argues that NAM's success is only partly explained by external factors, such as the policies of Truman administration and divisions among labor organizations. NAM's renewed ability to shape national affairs resulted from an internal transformation that vastly improved its administrative capacity, and from a change in its public relations and labor policies. These efforts came to fruition when NAM proved able to dominate the proceedings of the 1945 Labor-Management Conference.