Until recently, centre left social democrats held power in many countries across Europe. Since the financial crash of 2008 and high levels of immigration into Europe in recent years however, parties who once prospered from their "third way" centrist policies have suffered some major reverses. While the nationalist right and socialist left have found many new voters across the EU, the social democrats have struggled. Mark Urban reports from Germany and Italy on what the future now holds for this once all conquering political creed.