Do more inclusive parties change less? Intraparty democracy and programmatic change

The extent to which political parties change their policy positions and the emphasis they give to different topics is crucial for the representativeness and responsiveness of contemporary political systems. This article aims to clarify the role of intraparty democracy in explaining the amount of such change. Previous research has shown that a stronger empowerment of members decreases programmatic change. This hypothesis is tested here more broadly, looking at both position shifts and emphasis change, adopting a more comprehensive definition of intraparty democracy and unpacking the Left-Right scale into an economic and cultural subdimension. It is further argued that the effect of intraparty democracy is moderated by the relative salience of the economic vs. cultural subdimensions of political competition. The empirical analysis of 47 parties in 10 countries between 1995 and 2019 confirms that more internally democratic parties change less, while evidence concerning the moderating effect of relative salience is more mixed.