Supporters of opposition candidate Gen. Muhammadu Buhari's All Progressives Congress (APC) party celebrate by wheel-spinning motorcycles what they said was the senatorial win in Kano Central district of APC candidate Rabiu Musa Kwankwaso, in Kano, northern Nigeria Monday, March 30, 2015. Nigerians are waiting in hope and fear for results of the most tightly contested presidential election in the nation's turbulent history. (Photo by Ben Curtis/AP Photo)
