Ghana's opposition boycotted the inauguration of President Dramani Mahama, ignoring his appeals to end a dispute over last month's election in Ghana.
Politician Nana Akufo-Addo is again running for president of Ghana - a job that narrowly eluded him four years ago.
The death of Ghana's President John Evans Atta Mills left the nation in shock. Mills was months away from completing his first term in office.
As kings feud, ordinary people bear the brunt of Ghana's power vacuum, writes Afua Hirsch.
John Atta-Mills hailed the "dawn of a new era" on Wednesday as he was sworn in as Ghana's new president.
Thousands massed in Ghana's capital on Wednesday to see president-elect John Atta-Mills take over from John Kufuor.
The outcome of Ghana's presidential run-off is too close to call and will be decided by voting on Friday in a single constituency.
Tensions mounted in Ghana on Tuesday ahead of the declaration of the result of the country's presidential election.
Ghana's election will be decided in a December 28 run-off between the two leading contenders after neither won more than half the vote.
Partial unofficial results showed a neck-and-neck race on Monday in Ghana as votes were counted after general elections.
Officials began counting ballots late on Sunday in one of Africa's rare democracies, where voters are painfully aware of the example they are setting.
Thousands of Ghanaians on Friday held colourful rallies amid heavy downpours as political parties wrapped up their campaigns ahead of Sunday's vote.
Ghana will look to enhance its reputation as a beacon for democracy at elections on Sunday for a leader who will soon be tapping into new oil wealth.