“…Some argue that eastern enlargement has led to a new East-West cleavage in the Council (Mattila, 2009) and that different factors, such as vote weight, budget benefits from the EU, or government positions (left-right, EU integration), are driving voting behavior in old and new member states (Hosli, Mattila, & Uriot, 2011). Other authors note that the paralysis in EU decision-making that was awaited as a result of eastern enlargement did not materialize (Hagemann & de Clerck-Sachsse, 2007;Parízek, Hosli, & Plechanovová, 2015;Toshkov, 2017). While the success of pre-accession conditionality or post-accession socialization might partially explain this, the new member states' policy prefer-ences were unclear or matched already existing conflict lines within the Council.…”