Since the return of democracy in 1999, Nigeria has seen several presidential elections that were trailed by heavy controversy, legal battles, and international criticism.
While some victories were eventually upheld by the Supreme Court, the “controversial” label remains a part of their political history.
Here is a list of Nigerian presidents whose election victories faced significant disputes:
1. Bola Ahmed Tinubu (2023)
The 2023 election is one of the most legally challenged in Nigeria’s history. Opposition candidates Atiku Abubakar (PDP) and Peter Obi (Labour Party) described the process as a “sham” and a “rape of democracy.” The controversy centered on the failure of the Independent National Electoral Commission (INEC) to electronically transmit results in real-time to the IReV portal. Although the Supreme Court eventually upheld his victory, the opposition maintained that “justice was not served and it did not reflect the desire of the people.”
2. Umaru Musa Yar’Adua (2007)
The 2007 election is widely regarded as the most flawed in Nigeria’s democratic history. Even the winner, Umaru Yar’Adua, famously admitted during his inauguration that the process that brought him to power was “not perfect” and was “deeply flawed.” International observers, including the European Union, reported that the polls “fallen far short” of basic international standards. This controversy led Yar’Adua to set up the Justice Uwais Electoral Reform Committee to fix the system.
3. Olusegun Obasanjo (1999 & 2003)
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1999: As the first election of the Fourth Republic, the victory of Olusegun Obasanjo was immediately contested by his rival, Chief Olu Falae. Recently in 2025, Falae reiterated his stance, stating, “I won that election, not Obasanjo,” claiming he accepted the result back then only for the sake of national peace.
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2003: Obasanjo’s re-election was also heavily disputed. Opposition candidate Muhammadu Buhari challenged the results in a legal battle that lasted 30 months. International observers described the 2003 polls as being marred by “widespread violence and irregularities.”
4. Goodluck Jonathan (2011)
While the 2011 election was praised by some international observers as an improvement, it was highly controversial in Northern Nigeria. The controversy began before the vote regarding the “zoning system” after the death of Yar’Adua. Following Jonathan’s declaration as winner, widespread violence erupted in the North. Rival candidate Muhammadu Buhari claimed that his supporters in the south were “not allowed to vote,” and the resulting post-election riots led to nearly 1,000 deaths.
5. Shehu Shagari (1979)
In the Second Republic, Shehu Shagari’s victory was overshadowed by the famous “Twelve-Two-Thirds” legal battle. Obafemi Awolowo challenged the result, arguing that Shagari did not meet the constitutional requirement of winning 25% of the votes in two-thirds of Nigeria’s 19 states. Since two-thirds of 19 is 12.66, the court had to decide if 12 states were enough. The Supreme Court eventually ruled in Shagari’s favor, but the controversy followed his entire administration until the 1983 coup.
Honorable Mention: M.K.O. Abiola (June 12, 1993)
Though he was never sworn in, Moshood Abiola is the most famous figure of electoral controversy in Nigeria. He is widely believed to have won the 1993 election, which was described by observers as the “freest and fair” in history. However, the military government under Ibrahim Babangida annulled the results. In 2025, Babangida publicly admitted in his autobiography that Abiola “met all constitutional requirements to be declared Nigeria’s president.”
