Something is shaking European politics. In September, Italy elected populist firebrand Giorgia Meloni, who on Friday became the country’s first far-right leader since the war-time fascist Mussolini. Days before the nationalist, right-wing Sweden Democrats made an electoral breakthrough, gaining 20.5% of the vote in an election dominated by concerns over gang violence and immigration. Though there are some exceptions — a pro-European, liberal recently saw off a far-right populist challenger for the Austrian presidency — these two examples point to a possible populist, a right-wing resurgence …