Goodluck Jonathan inherited the presidency in May 2010 on the death of his predecessor, and went on to win elections in April 2011.
International observers gave the 2011 elections their general approval. Other elections since the end of military rule in 1999 have been widely condemned for state-sponsored manipulation.
However, the announcement of the results was followed by violence in the northern stronghold of his main opponent, General Muhammadu Buhari.
The election results revealed a geographical divide, with Mr Jonathan scoring well in the predominantly Christian south, and Gen Buhari sweeping many of the Muslim-dominated northern states.
Mr Jonathan was elected as vice-president to Umaru Yar'Adua in 2007, and had to serve as acting president as Mr Yar'Adua's health declined.
Mr Jonathan has expressed his commitment to fighting corruption. In November 2011, he sacked the head of the country's anti-corruption agency, accusing her of not doing enough to tackle the problem.
The increasing militancy of the northern-based radical Islamist group Boko Haram has also proved to be a major headache for the president. After a series of bloody attacks on Christmas Day 2011, Mr Jonathan vowed that the government would do all in its power to bring the perpetrators to justice.
Despite this, in 2012 more than 600 people were killed in attacks blamed on Boko Haram, and President Jonathan went on to declare a state of emergency in three northern states and deploy a large number of troops in May 2013.
Mr Jonathan was born in 1957 in Bayelsa, a state in the oil-rich Niger Delta. Unlike his predecessor, who was a Muslim from the northern Katsina state, he is a Christian from the south.
After studying zoology at university, he worked as an education inspector, lecturer and environmental protection officer before going into politics in 1998.
Elected deputy governor of his native Bayelsa state in 1999, he was promoted when the governor was impeached on corruption charges in 2005.
Two years later, he was hand-picked to be Mr Yar'Adua's running mate in the 2007 election, which the ticket won amid allegations of widespread vote-rigging.
- Administrative divisions: This entry generally gives the numbers, designatory terms, and first-order administrative divisions as approved by the US Board on Geographic Names (BGN). Changes that have been reported but not yet acted on by BGN are noted.
- Capital city > Geographic coordinates: This entry gives the name of the seat of government, its geographic coordinates, the time difference relative to Coordinated Universal Time (UTC) and the time observed in Washington, DC, and, if applicable, information on daylight saving time (DST). Where appropriate, a special note has been added to highlight those countries that have multiple time zones.
- Constitution: The dates of adoption, revisions, and major amendments to a nation's constitution
- Diplomatic representation from the US > Mailing address: This entry includes the chief of mission, embassy address, mailing address, telephone number, FAX number, branch office locations, consulate general locations, and consulate locations.
- Executive branch > Cabinet: Cabinet includes the official name for any body of high-ranking advisers roughly comparable to a U.S. Cabinet. Also notes the method for selection of members.
- Executive branch > Elections: Elections includes the nature of election process or accession to power, date of the last election, and date of the next election
- Executive branch > Head of government: Head of government includes the name and title of the top administrative leader who is designated to manage the day-to-day activities of the government. For example, in the UK, the monarch is the chief of state, and the prime minister is the head of government. In the US, the president is both the chief of state and the head of government.
- Government type: A description of the basic form of government (e.g., republic, constitutional monarchy, federal republic, parliamentary democracy, military dictatorship).
- Independence: For most countries, this entry gives the date that sovereignty was achieved and from which nation, empire, or trusteeship. For the other countries, the date given may not represent "independence" in the strict sense, but rather some significant nationhood event such as the traditional founding date or the date of unification, federation, confederation, establishment, fundamental change in the form of government, or state succession. Dependent areas include the notation "none" followed by the nature of their dependency status. "
- Judicial branch: The name(s) of the highest court(s) and a brief description of the selection process for members.
- Legal system: A brief description of the legal system's historical roots, role in government, and acceptance of International Court of Justice (ICJ) jurisdiction.
- Legislative branch: This entry contains information on the structure (unicameral, bicameral, tricameral), formal name, number of seats, and term of office. Elections includes the nature of election process or accession to power, date of the last election, and date of the next election. Election results includes the percent of vote and/or number of seats held by each party in the last election.
- Political parties and leaders: Significant political organizations and their leaders.
- Political pressure groups and leaders: Organizations with leaders involved in politics, but not standing for legislative election.
- Suffrage: The age at enfranchisement and whether the right to vote is universal or restricted
"Nigeria Government Stats", NationMaster. Retrieved from http://www.nationmaster.com/country-info/profiles/Nigeria/Government
"Nigeria Government Stats, NationMaster." 1960-2014. <http://www.nationmaster.com/country-info/profiles/Nigeria/Government>.
'Nigeria Government Stats, NationMaster', <http://www.nationmaster.com/country-info/profiles/Nigeria/Government> [assessed 1960-2014]
"Nigeria Government Stats", NationMaster [Internet]. 1960-2014. Avaliable from: <http://www.nationmaster.com/country-info/profiles/Nigeria/Government>.
"Nigeria Government Stats", NationMaster. Avaliable at: nationmaster.com. Assessed 1960-2014.
"Nigeria Government Stats, NationMaster," http://www.nationmaster.com/country-info/profiles/Nigeria/Government (assessed 1960-2014)
"Nigeria Government Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Nigeria/Government (last visited 1960-2014)
"Nigeria Government Stats", NationMaster, http://www.nationmaster.com/country-info/profiles/Nigeria/Government (as of 1960-2014)