par Close, Caroline
Référence Journée d'étude 'Sciences Po Quanti' (2: 21-05-2015: Paris)
Publication Non publié, 2015-05-21
Communication à un colloque
Résumé : Party cohesion is a crucial aspect of parliamentary systems. Yet party cohesion varies across time, parties and systems. Among the factors affecting this degree of cohesion, scholars have set forth the influence of macro-level and individual-level factors. Although party-level factors have been included as determinants of cohesion, a crucial element has often been neglected: party ideology. This paper seeks to fill this gap. In that purpose, the paper conceives cohesion as the extent to which legislators have integrated the norm of party loyalty, and develops an extended understanding of party ideology and of its direct and indirect effects on legislators’ integration of this behavioural norm. Using attitudinal data of 840 parliamentarians elected in 15 European national assemblies, the paper provides evidence of a ‘party ideology effect’, particularly in the green and radical right parties. These results suggest that a greater attention should be directed towards party ideology as a determinant aspect of legislative dynamics and representation style.