Tag june 12 election
You're referring to the June 12, 1993 presidential election in Nigeria!
On June 12, 1993, Nigerians went to the polls to elect a new president, but the election was annulled by the military government of General Ibrahim Babangida just 20 hours later. The election was widely seen as the fairest and most free in Nigeria's history, and many believed that the winner, Moshood Abiola, would have become the first democratically elected president of Nigeria.
The annulment of the election led to widespread protests and unrest, and it is still considered one of the most significant events in Nigeria's political history.