Navigating new realities: Explaining programmatic transitions of mainstream and niche parties

Electoral competition is determined by the issues that parties choose to compete on and the stances they adopt on these issues. However, little research has examined the trade-off between expanding a party’s programmatic stances to secondary issues while maintaining ideological continuity on primary issues. This article seeks to address this gap by examining programmatic transitions among mainstream and niche parties and in which contexts these transitions are more frequent. The study analyses 47 parties in 10 established democracies between 1986 and 2020 using multiple regression techniques. The results show that niche parties are more likely to focus on secondary issues, and when they make such transitions, they tend to be larger. The analysis also reveals that the length of niche competition influences mainstream parties’ programmatic transitions, while niche parties’ transitions are driven by their continuity in programmatic transitions and governmental experience.