European Central Bank (ECB) headquarters in Frankfurt, Germany.

Throughout her election campaign, Angela Merkel, the German chancellor, has insisted the EU's work has not been put on hold until Germans go to the polls on Sunday. But officials in other capitals privately insist many of the hard decisions facing the eurozone will only be taken up after a new government in Berlin is in place.

Some of the most critical challenges facing the single currency are outside the hands of EU decision makers, particularly the teetering Italian government, the survival of which Brussels and Berlin say is their most pressing concern. In addition, some issues that were once viewed as central to the future of a fully integrated economic and monetary union, such as legally binding reform "contracts" between eurozone governments and monitors in Brussels, appear to have become victims of political resistance.