1. He Is a Former Military Dictator
Muhammadu Buhari, a 72-year-old retired general, led the country for 20 months after a coup in 1983. He headed a regime responsible for a so-called “War Against Indiscipline,” with police whipping people who showed up late for work or cut in lines.
2. He Lost Nigeria’s Last Election
This contest is a rematch of the presidential election in 2011, when Goodluck Jonathan’s victory over Mr. Buhari prompted post-election, religious-toned riots that left more than 800 people dead.
Read more: 5 Things to Know About Muhammadu Buhari – WSJ.