Opposition candidate Gen. Muhammadu Buhari, center, arrives to validate his voting card using a fingerprint reader, prior to casting his vote later in the day, in his home town of Daura, Nigeria Saturday, March 28, 2015. Nigerians went to the polls Saturday in presidential elections which analysts say will be the most tightly contested in the history of Africa's richest nation and its largest democracy. (AP Photo/Ben Curtis) (The Associated Press)
Women vote
Traditional rulers