ABSTRACT
This chapter attempts to clarify the understanding of the impact of claim-making campaigns on subsequent claim-making campaigns. A campaign transforms political opportunity structure (POS), changes the array of available models for contentious performances, and alters connections among potential actors. A campaign is a sustained, coordinated series of episodes involving similar claims on similar or identical targets. In 1968, leftist students initiated a campaign for democratic rights on the eve of the Mexico City Olympic Games and suffered severe repression by the government of Gustavo Diaz Ordaz. A campaign sometimes produces changes in available models of performances, most directly by innovating as the Zapatistas did in 1994. In the case of Mexico from 1968 to the 1990s, Tamayo provides evidence that the radical and populist campaigns of the 1970s and 1980s increased the opportunity for new challenges. Feminist activists who were political party militants added a major component to internal party dynamics between electoral campaigns.
