季莫申科聯盟
In August 2011 Korniychuk voluntarily resigned from his post in connection with criminal investigations against him. The leadership of Yulia Tymoshenko Bloc had accused him of working together with their arch-rivals Party of Regions. Former member of All-Ukrainian Union "Fatherland" (that party was also a member of the Yulia Tymoshenko Bloc) Natalia Korolevska was elected party leader on 23 December 2011.