ROME—Italians went to the polls Sunday in a pivotal referendum that pits the country’s center-left prime minister, Matteo Renzi, against a surging populist movement. The ballot, on proposed changes to the country’s constitution, is effectively a vote on Mr. Renzi’s overall performance and comes as mainstream politicians across Europe face challenges from antiestablishment forces fueled by economic discontent and unease over...

Source: Wall Street Journal December 04, 2016 06:12 UTC