(FILES) In this file photo taken on December 15, 2017, Ilse Aigner, then Bavarian Economy Minister of the Christian Social Union (CSU), takes part in the CSU congress in Nuremberg, southern Germany. The current president of the Bavarian state parliament, 61-year-old Ilse Aigner (CSU), is being tipped to become Germany's first female president, according to sources close to the Christian conservative union. (Photo by Christof STACHE / AFP via Getty Images)