Here are links to organizations relevant to research in Political Sociology
ECPR Standing Group on Political Sociology is a standing group of the European Consortium for Political Research. It organises panels on Political Sociology
The Political Sociology Research Network is a network of Political Sociologists collaborating in the context of the European Sociological Association (ESA). We organise conference panels both at the main ESA conferences and at interim conferences (the 2010 conference was in Lille. The 2012 was in Milan; the 2016 will be in Brussels).
The Council for European Studies is a multi-disciplinary network of researchers working on Europe and the European Union.
'Extremism and Democracy' is an ECPR standing group which organises conference panels and discusses publications on issues such as populism and right wing extremism.