In arguably the most significant general election since the country's independence, Kenyans will test a new constitution adopted in 2010, after widespread violence and near civil war following the last ballot four years ago.
A bloody struggle for political power between tribes killed over a thousand people and a hundred thousand more were forced from their homes.
But not a single person implicated in the crimes has been convicted. And while the country's justice minister agrees on the urgency of ending impunity before the vote, there appears to be no political will for prosecutions.
Al Jazeera's Peter Greste reports from Eldoret, in western Kenya.