How do local social movement groups respond to national electoral politics? Previous studies, often based on aggregated data on public protests, focus on the effects of elections on established social movement organizations (SMOs). Some find that SMOs flourish during election years, taking advantage of the political opportunities that elections pose. Others conclude that elections hurt SMOs, siphoning members and resources. Using ethnographic, in-depth interview, and document data on new and emerging social movement groups (SMGs) in Pittsburgh for 20 months before and after the 2004 U.S. presidential election, we examine how members think about elections and whether and how groups decide to respond to national electoral campaigns. We find that SMGs vary considerably in the strategies of action or inaction they adopt, depending on their changing sense of whether the election poses an opportunity or a threat to the group and that these strategies of action are patterned in path-dependent sequences. We conclude with a discussion of the possibilities for integrating concepts of path-dependency and timing into social movement research.Social movements and elections pose alternative options for political action (Garner & Zald, 1987;Tilly, 1988b). Social movements operate outside the formal institutions of politics; elections operate within. As competing models for effecting social change, social movements and electoral campaigns might be expected to differ considerably in their operations, personnel, strategies, and tactics, but that is not always the case. In movement-rich, modern democratic societies, a "fuzzy and permeable boundary" often