Research on social processes in the production of scientific output suggests that the collec- tive research agenda of a discipline is influenced by its structural features, such as “invisible colleges” or “groups of collaborators” as well as academic “stars” that are embedded in, or connect, these research groups. Based on an encompassing dataset that takes into account multiple publication types including journals and chapters in edited volumes, we analyze the complete co-authorship network of all 1,339 researchers in German political science. Through the use of consensus graph clustering techniques and descriptive centrality mea- sures, we identify the ten largest research clusters, their research topics, and the most cen- tral researchers who act as bridges and connect these clusters. We also aggregate the findings at the level of research organizations and consider the inter-university co-author- ship network. The findings indicate that German political science is structured by multiple overlapping research clusters with a dominance of the subfields of international relations, comparative politics and political sociology. A small set of well-conne cted universities takes leading roles in these informal research groups.