The emergence of strong nationalism and Euroskepticism across Europe has challenged Europe's traditional political parties and threatened the continuity of Continental integration. But in the past few weeks, the political establishment has found itself under fire from a different direction. In Germany and France, which hold general elections this year, candidates who express dissatisfaction with the political status quo yet defend closer European ties have gained popularity. If those candidates are successful, immediate fears about the eurozone's future could fade, even though the underlying causes of the populist wave sweeping Europe would remain....