2015 Nigerian general election north-eastern states. The government closed its land and sea borders from midnight on 25 March until the end of the polling date. The election was extended to 29 March due to delays and technical problems with the biometric card readers. It was the most expensive election ever to be held on the African continent. Nigeria is the continent's most populous country, has its largest economy and is its leading oil producer. Opposition candidate Muhammadu Buhari won the presidential election by more than 2.5 million votes. Incumbent President Goodluck Jonathan conceded defeat on 31 March, before the results from all 36
Muhammadu Buhari opposition to corruption. Buhari won 12,214,853 votes, coming in second to the incumbent president Goodluck Jonathan of the PDP, who polled 22,495,187 votes and was declared the winner. In the runup to the 2015 Presidential elections, the campaign team of incumbent President Goodluck Jonathan asked for the disqualification of General Buhari from the election, claiming that he is in breach of the Constitution. According to the fundamental document, in order to qualify for election to the office of the President, an individual must be "educated up to at least School certificate level or its equivalent". Buhari has failed to submit