Information, politicization, and reputation: assessing interest groups’ agenda-setting influence in the EU

This study examines interest groups’ influence on the European Commission’s policy agenda. We argue that organizations can gain agenda-setting influence by strategically emphasizing different types of information. Analyzing a novel dataset on the engagement of 158 interest groups across 65 policy issues, we find that prioritizing information about audience support is more advantageous than emphasizing expert information. However, the effectiveness of highlighting the scope of audience support depends on the level of issue salience and degree of interest mobilization. Specifically, our findings indicate that when dealing with issues characterized by quiet politics, there are no systematic differences among groups employing distinct modes of informational lobbying.