11:19 GMT 31st January 2012
Central African Republic - Francois Bozize was reelected to a second term in January.
Uganda - In power since 1986, Yoweri Museveni beat his main rival Kizza Besigye for the third time in February's election.
Benin - Thomas Boni Yayi was re-elected in March.
Niger - Veteran opposition leader Mahamadou lssoufou won the March 2011 presidential poll held to end a year-long military junta.
Chad - ldriss Deby won a fourth term in April in a poll boycotted by the opposition.
Djibouti -Voters re-elected President lsmael Omar Guelleh in April after the constitution was amended in 2010 allowing him to run for a third term.
Nigeria - Interim president Good luck Jonathan won April's presidential poll with 59 per cent of the vote against his main rival 's 32 per cent.
Seychelles - Incumbent James Michel won a second term in May. He previously served as Vice-President under his predecessor, France Albert Rene from 1996 to 2004.
Sao Tome and Principe - Former president Manuel Pinto da Costa was returned to power in August, 20 years after losing office.
Cape Verde - Opposition candidate Jorge Carlos Fonseca won presidential elections in a second-round victory in August
Zambia - Veteran opposition candidate Michael Sata won the presidency in September, unseating a government that had been in power for 20 years.
Cameroon - In power since 1982, Paul Biya won a new seven-year term in October.
Liberia -Incumbent Ellen Johnson-Sirleaf of the Unity Party won the run-off vote with 90.7 per cent of the ballot in November.
DRC - Former guerrilla fighter Joseph Kabila secured another term in November elections, a win still disputed by his main opposition rival.
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