Costas Eleftheriou is Assistant Professor in Political Sociology at the Department of Political Science of the Democritus University of Thrace. He holds a PhD in political science from the University of Athens. He has worked as an Adjunct Lecturer at the Democritus University of Thrace, the University of Athens and the Hellenic Open University. He also collaborates with the Historical Archive of Commerce and Entrepreneurship of INEMY-ESEE and from 2019 is the coordinator of the Political Analysis Unit of the ENA - Institute of Alternative Policies. He has published in Greek, English and Spanish on party theory, Greek politics and employers’ organisations in Greece.