It won't even make it to 2020. I say this because due to the country's current state, I cannot see Nigerians voting for Buhari or APC into power for the foreseeable future. Unlike GEJ, Buhari is a military man and will not yield power so easily, causing widespread violence in the country which will be exacerbated by the militant groups in the Niger Delta and the sectarian groups in the East. Also, unlike in the 60's, the West seem to be prepared for a dismantled Nigeria and would probably choose to not interfere as aggressively as they did then.