The appointment of Andrey Gyurov as Bulgaria 's caretaker prime minister shows what's really happening in Bulgarian politics right now. Behind the constitutional formalities, a coalition against corruption is taking shape before April's elections. When Acting President Iliana Yotova picked Gyurov from the constitutionally required "house book" of eligible candidates, she made the only choice that counted. Of the five officials who said they were willing to serve, four were connected to the