Lobbying for the role of Nigeria's new vice-president begins after Goodluck Jonathan's inauguration and Umaru Yar'Adua's death.
President Goodluck Jonathan of Nigeria wins the presidential election held on 16 April.
Thousands of members of Nigeria's ruling People's Democratic Party begin voting on whether incumbent President Goodluck Jonathan should be their choice of candidate in April presidential elections.
Former Nigerian Vice President Atiku Abubakar is chosen to challenge incumbent President Goodluck Jonathan for the ruling People's Democratic Party nomination in next year's presidential election.
President Goodluck Jonathan nominates Namadi Sambo to serve as Nigeria's vice president.
Nigeria's acting President, Goodluck Jonathan, is sworn in as President of Nigeria following the death of Umaru Yar'Adua.
Nigeria's acting President Goodluck Jonathan inaugurates a new Cabinet.
Nigeria's acting president Goodluck Jonathan dissolves the country's cabinet.
Vice President Goodluck Jonathan is appointed acting President of Nigeria in place of Umaru Yar'Adua.
Nigerian President Umaru Yar'Adua gives his first interview since going into hospital in Saudi Arabia to the BBC, saying he hopes to return home soon as protests in the capital Abuja demand an end to the political situation.
Opposition parties in Nigeria raise their concerns over "missing" President Umaru Yar'Adua who has been at a hospital in Saudi Arabia for six weeks.