A dwarf among giants? Party competition between ethno-regionalist and state-wide parties on the territorial dimension: The case of Italy (1963–2013)

Scholars of party politics have recently examined the influence of niche parties on the dynamics of party competition. In particular, drawing on the ‘Position, Salience and Ownership’ (PSO) model, it has been argued that when a new niche actor enters the political arena, it seeks to introduce a new policy dimension into political debate and simultaneously affects the competitive strategies of mainstream actors. By using manifesto data, this article analyses the impact of the Lega Nord on political discourse in Italy relating to the territorial dimension. Its findings challenge the assumptions of the PSO theory on niche-mainstream dynamics of competition. The article argues that, firstly, niche parties can mobilise on a policy dimension that has long been present on the political agenda; secondly, that niche party influence on mainstream party strategies is limited, at least when compared with the influence of other systemic variables. Nevertheless, the role of niche parties can be re-evaluated by considering a further strategic tool that parties can use to define their strategies, namely framing. In particular, the article argues that the Lega Nord has introduced a new language into political debate on the territorial dimension, which has required rival parties to react by reframing and redefining these issues differently from the past. Using an original coding scheme for the measurement of party attitudes in party manifestos, the article provides empirical grounds for arguing that a consideration of rhetoric should be included in any analysis of the competitive strategies of political parties in a two-dimensional space