Germany's far-right Alternative for Germany (AfD) party has been polling above 20% ahead of tomorrow's federal election and looks set to become the country's second largest party in the Bundestag. That doesn’t mean it will form part of Germany’s next government. None of the other parties set to enter the Bundestag will share power with the AfD, part of a long-standing pact among the country’s mainstream parties to keep the far-right out of power. In Germany, a country whose Nazi past still carries a heavy burden, that arrangement has been sacrosanct for decades. However, the AfD, labelled as extremist by...