Nigeria relatively little violence or voter fraud, in contrast to previous elections. In the March 2015 election, Muhammadu Buhari defeated Goodluck Jonathan by roughly 2 million votes. Observers generally praised the election as being fair. Jonathan was generally praised for conceding defeat and limiting the risk of unrest. Nigeria is a federal republic modelled after the United States, with executive power exercised by the President. It is influenced by the Westminster System model in the composition and management of the upper and lower houses of the bicameral legislature. The president presides as both head of state and head of the federal
Ghana–Nigeria relations to Ghana, which the PNDC hailed as a watershed in Ghana–Nigeria relations. Subsequent setbacks that Babangida initiated in the democratic transition process in Nigeria clearly disappointed Accra. Nonetheless, the political crisis that followed Babangida's annulment of the results of the June 1993 Nigerian presidential election and Babangida's resignation from the army and presidency two months later did not significantly alter the existing close relations between Ghana and Nigeria, two of the most important members of ECOWAS and the Commonwealth of Nations. After the takeover in November 1993 by General Sani Abacha as the new Nigerian head of state, Ghana and