LAGOS - How do you stage elections for more than 93 million voters? With great difficulty, headaches, delays and technical issues, it turns out. More than 24 hours after the polls closed, some Nigerians were still voting in Africa’s largest democratic exercise.

The numbers are staggering; Nigeria has 176,606 polling units and voting passed without incident in most of them. However, it was overshadowed by widespread reports of delays, technical issues, and attacks and voter intimidation at some polling stations.

Yiaga Africa, a non-profit civic group that deployed 3,836 observers across the country said it was disappointed with the elections. “There’s a sense of disappointment, quite frankly, with the way this process has gone. Clearly, we’ve not overcome and resolved, perennially our logistical challenges with elections,” Samson Itodo, Yiaga’s Executive Director told CNN.

This was supposed to be the year that the electoral commission would provide real-time results via its new portal, iReV. Yiaga said it was concerned that as of Saturday 10pm local time, when results were known from thousands of polling units, they had not been uploaded to the electoral commission’s voting portal.

Nigeria’s Peter Obi Wins in Lagos State in Presidential Election

Nigerian presidential candidate Peter Obi, whose campaign attracted young people and urban voters fed up with corrupt politics, won most votes in the commercial hub of Lagos state, where Africa's biggest city is located. Nigeria's electoral commission began announcing state-by-state results in the national elections on Sunday, though it is not expected to name a victor in the race to succeed President Muhammadu Buhari for several days...He was most popular with the youth, but especially urban, relatively educated voters with access to smartphones and social media. But he still faces an uphill struggle in rural areas with a less sophisticated audience.