Ukrainian comic Volodymyr Zelensky has scored an avalanche triumph in the nation's presidential decision.
With about all votes included in the run-off vote, Mr Zelensky had taken over 73% with officeholder Petro Poroshenko trailing a long ways behind on 24%.
"I will never disappoint you," Mr Zelensky told commending supporters.
Mr Poroshenko, who conceded rout after the principal leave surveys were distributed, has said he won't leave governmental issues.
Political newcomer Mr Zelensky, 41, is best known for featuring in a mocking TV arrangement Servant of the People in which his character incidentally winds up Ukrainian president.
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He told correspondents he would "reboot" harmony converses with Russian-supported separatists battling Ukrainian powers and volunteers in the east.
"I feel that we will have work force changes. Regardless we will proceed toward the Minsk [peace] talks and head towards closing a truce," he said.
Time for the clowning to stop
Examination by Jonah Fisher, BBC News, Kiev
Ukrainians are getting up at the beginning of today and finding that the most recent couple of months were not a fantasy.
They truly have chosen a man who right now stars in a TV arrangement as the president - as the nation's next genuine president. Also, it wasn't close at all.
The weight will presently be on Mr Zelensky to show that he realizes what he is doing.
All through the decision battle, he kept away from genuine meetings and talks about strategy - leaning toward rather to present happy recordings via web-based networking media.
He has about a month prior to the initiation. At that point the humorist turned-president will be looked with a complex in-plate that incorporates a stewing war with Russian-supported radicals in the east.
Mr Poroshenko, who has been in power since 2014, said the aftereffect of the decision "abandons us with vulnerability [and] flightiness".
"I will leave office yet I need to solidly pressure - I won't quit governmental issues," he said.
Presidential decision results. Second round
Who is Volodymyr Zelensky?
Mr Zelensky featured in the long-running sarcastic show Servant of the People in which his character incidentally turns into Ukraine's leader.
He plays an instructor who is chosen after his swearword loaded rage about defilement becomes famous online via web-based networking media.
He kept running under an ideological group with a similar name as his show.
With no past political experience, Mr Zelensky's battle centered around his distinction to different competitors instead of on any solid strategy thoughts.
In spite of this, he won the first round with over 30% of the vote - practically twofold what Mr Poroshenko got when he completed in second spot with 15.95%.
What's voters' opinion of him?
Examiners trust Mr Zelensky's casual style and pledge to tidy up Ukrainian legislative issues resounded with voters who are baffled with the nation's way under Mr Poroshenko.
Shunning customary crusade strategies, Mr Zelensky diverted his on-screen persona by promising to stamp out debasement and extricate the grasp of oligarchs on Ukraine.
Specialists state his supporters, baffled with foundation government officials and cronyism, have been stimulated by his allure and against defilement message.
His commentators, in the interim, are wary about his qualifications, with many communicating worry over his nearby connects to the very rich person oligarch Ihor Kolomoyskyi.
They have communicated questions that he will almost certainly take on the nation's powerful oligarchs and face Russian President Vladimir Putin.