Progress slowed down after failures in a new electronic voting system . Kenyatta faces crimes against humanity charges at the International Criminal Court . His main opponent , John Odinga , raises concerns about the indictment . Nima Elbagir and Lillian Leposo reported from Nairobi , and Faith Karimi reported from Atlanta . The winner must secure more than 50 % of the vote to avoid a runoff .
Progress slowed down after failures in a new electronic voting system . Kenyatta faces crimes against humanity charges at the International Criminal Court . His main opponent , John Odinga , raises concerns about the indictment . The winner must secure more than 50 % of the vote to avoid a runoff .