Since Gamson's (1975) landmark study of social movement organizations, scholars have debated whether it is more advantageous to concentrate on a narrow or diverse set of issues. This paper recasts this debate in terms of organizational survival. Drawing on ideas from theories of category...

A major goal of the environmental movement is to conserve or improve the natural environment, but evidence showing that environmental mobilization produces positive environmental outcomes is mixed. This paper addresses a fundamental question about the relative impact of pro-environmental...

This article considers the role of social movement allies in Congress in advancing proenvironmental legislation. We argue that compared to sponsors of legislation who hold moderate views, sponsors with extreme ideological positions will be less likely to produce legislation desired by the...

This article considers the role of social movement allies in Congress in advancing proenvironmental legislation. We argue that compared to sponsors of legislation who hold moderate views, sponsors with extreme ideological positions will be less likely to produce legislation desired by the...