Vitali Klitschko to combine parliamentary activities with any other public employment). Poroshenko was elected President of Ukraine on 25 May 2014. Poroshenko appointed Klitschko as head of Kiev City State Administration on 25 June 2014. Klitschko headed the election list of the Petro Poroshenko Bloc in the late October 2014 Ukrainian parliamentary election, but he vowed not to resign as Mayor of Kiev. On 21 November 2014 Klitschko gave up his seat in the new parliament. Petro Poroshenko Bloc won the election with 132 seats. On 28 August 2015 the UDAR merged into Petro Poroshenko Bloc "Solidarity". Klitschko became the new party
Vitali Klitschko leader. In the 2015 Kiev Mayoral election Klitschko was reelected with 66.5% of vote. For this he needed a second round of Mayoral elections between him and Boryslav Bereza after incumbent Klitschko scored 40.5% of the vote and Bereza 8.8% in the first round. (Bereza gained 33.51% of the vote in the second round of Mayoral elections.) Klitschko resigned as Petro Poroshenko Bloc chairman (on 26 May) after a new law barring a head of administration to be chairman or a member of a political party took effect on 1 May 2016. Klitschko is in favor of the Association Agreement