The people of Ukraine are voting in the first round of presidential elections.
Current leader Petro Poroshenko, 53, is seeking re-election but the surprise front-runner is 41-year-old comedian Volodymyr Zelenskiy.
Both, along with former PM Yulia Tymoshenko, 58, have expressed largely pro-EU views during the campaign.
None of the pro-Russian candidates are seen as serious contenders. Areas controlled by pro-Russian separatists are boycotting the poll.