Alice Weidel is a politician of contradictions: a German nationalist who lives in Switzerland; a former investment banker who rails against elites; and a lesbian with two adopted sons, leading a party that defines a family as ‘father, mother and children’. Subscribe to The Guardian on YouTube ► http://bit.ly/subscribegdn Yet she has risen to the top of Germany’s far-right Alternative für Deutschland (AfD), picked to be its candidate for chancellor in federal elections on Sunday. What began as a