Head of the Ukrainian Central Electoral Commission Tetyana Slipachuk (L) walks past a screen displaying the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)

Head of the Ukrainian Central Electoral Commission Tetyana Slipachuk (C) and members of the Ukrainian Central Electoral Commission attend a session to reveal the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)

Members of the Ukrainian Central Electoral Commission attend a session to reveal the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)

Head of the Ukrainian Central Electoral Commission Tetyana Slipachuk attends a session to reveal the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)

Members of the Ukrainian Central Electoral Commission attend a session to reveal the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)

Members of the Ukrainian Central Electoral Commission attend a session to reveal the final results of the first round of Ukraine's presidential election at the Central Electoral Commission headquarters in Kiev, on April 7, 2019. (Photo by Genya SAVILOV / AFP)