The creation of the Euro has meant one of the most important national policies, monetary policy, has been supranationalised. The goal of this paper is to understand how this transformation of economic decision-making in Europe may have impacted the economic voting behaviour of electorates at the national level. What may happen to economic voting if citizens of Eurozone countries understand that economic decisions are increasingly decided upon at a supranational rather than national level? We seek to answer this question using novel data from two representative online surveys that were implemented simultaneously in Germany and Greece in January 2019. These two countries were selected since they exhibit some diverging performances in the last twenty years in the Eurozone. We present a comprehensive vote model where the importance of economic perceptions are first presented as a baseline. Then, economic perceptions are interacted with the degree to which citizens perceive that the EU is responsible for economic policy. We will also differentiate the results according to whether the individuals have more or less political information, through readership of newspapers. The reason to do so is due to the fact that the importance of the EU for economic responsibility may impact to a greater extent on national economic voting in conditions of greater information. We expect those who are more informed about the consequences of supranationalisation of politics to be more aware of its impact on the ability to hold the government accountable for economic performance.