As a matter of fact, General Buhari did not win this presidential election:

If you did not see my column last week, it was because I did not want to rain on anyone’s parade. I wanted the euphoria over the bullet we missed by avoiding the riots that would have ensued had the APC been defeated to subside. But I am now back to tell you that the presidential election was a big INEC rigmarole. Long before Jonathan lost the election to Buhari, he had been defeated by the machinations of Jega and INEC.
As a matter of fact, General Buhari did not win this presidential election: President Jonathan lost it. The
president lost because he allowed himself to be defeated. Maybe he did not want to remain in power badly enough. Or maybe there was a side of him that felt there is honour in being the first incumbent president to lose an election in Nigeria. Whatever the case; he failed to heed the warning of many that, like Aminu Tambuwal and Lamido Sanusi, Attahiru Jega was working for the enemy.

Failure of Tinubu

With the coalition of Bola Tinubu’s ACN and Buhari’s CPC, many concluded that the outcome of the 2015 presidential election would be determined in the South-West. The assumption was that Tinubu would provide the killer-punch that had been missing in Buhari’s earlier failed attempts. However, this has proved to be mistaken. Tinubu failed to clean up the South-West with his broom for the APC. Indeed, in order for the APC to prevail in Lagos with only 160,000 votes, INEC had to ensure that many non-indigenes could not get their PVCs.
The truth of the matter is that, quite apart from the shenanigan of having a Redeemed Yoruba pastor as Buhari’s vice-presidential running-mate, the people of the South-West don’t like Buhari. In the 2011 election, they said this emphatically by giving him a paltry 321,000 votes out of the 4.7 million cast in the geopolitical zone. This time, in 2015, Buhari received 2.4 million South-West votes, with a plurality of 600,000 over Jonathan. However, most of those votes were actually not for Buhari: they were against Jonathan.
In the end, the South-West vote was neither pivotal to Buhari’s victory nor central to Jonathan’s defeat. Tinubu’s assistance for Buhari ended at the APC presidential primaries where he got Buhari nominated against the wishes of Northern delegates. All Tinubu did at the level of the presidential election was to give a façade of national spread to Buhari’s essentially Northern victory. This factor will soon come to haunt Tinubu and his South-West cohorts when it is time to share the spoils of victory in the Buhari administration.
Should APC lose the Lagos governorship election, Tinubu would be left in a quandary. All the Northern timber and caliber who were missing in action throughout the campaign when Tinubu, Fashola and other Southern politicians were running helter-skelter with Buhari, will soon come out of the woodwork to claim their Buhari inheritance. Inevitably, they will overshadow the Southern brigade. Vice-President Osinbajo will simply be sent to fetch water when crucial decisions are to be made by Northern “born-to-rule” elements.