SaharaReporters organised online polls on Facebook and Twitter asking Nigerians to select their worst Nigeria's president since the return to democracy in 1999.
On Facebook, the poll had only Olusegun Obasanjo and Muhammadu Buhari.
Total: 49,000 votes
Obasanjo: 20,000 votes
Buhari: 29,000 votes
Twitter had the three ex-presidents: Olusegun Obasanjo, Umaru Musa Yar' adua and Goodluck Jonathan along with the incumbent President Muhammadu Buhari.
Total: 28,000 votes
Obasanjo: 2,520 votes
Yar' adua: 280 votes
Jonathan: 6,160 votes
Buhari: 19,040 votes