Bündnis Zukunft Österreich
After a series of losses in state elections, rumours spread that Strache would run for the office of national party leader against Haider's sister, Ursula Haubner. The high risk of Haubner's defeat was probably one of the events that induced Haider to set up a new party, the Alliance for the Future of Austria (BZÖ). After the split, Strache was elected national party leader of the FPÖ on 23 April 2005.