In any case, the polls do not lie: it will be a neck-and-neck race. After tomorrow, the main question is how the losing party will react. Both Odinga and Ruto have in the past encouraged their supporters to take to the streets. And that had major, disruptive consequences: in the previous elections, when the polls had to be taken again after a court decision, more than a hundred people were killed in riots.
In 2007-2008 there were even more than a thousand. Outgoing President Kenyatta and his future Vice-President Ruto were indicted at the International Criminal Court for their role in the violence: both were not prosecuted due to lack of sufficient evidence.