The eurozone could soon face a test of survival. The currency union's fate could hinge on the results of the presidential election in France, the eurozone's second-largest economy. French voters head to the polls in the two-round presidential election on April 23 and May 7, and a victory by National Front candidate Marine Le Pen would almost certainly bring about the end of the eurozone. Legislative elections will follow on June 11 and June 18. Inroads made in both elections by political forces that resist globalization and want to stop the process of European integration will have far-reaching effects on France and the eurozone....