Here is an example where a sitting president is rejecting the election results in the tiny country of Gambia.
Gambia leader Yahya Jammeh rejects election result
Gambian leader Yahya Jammeh has rejected the result of the presidential election held earlier this month, a week after admitting defeat.
Speaking on state TV, Mr Jammeh cited "abnormalities" in the vote and called for fresh elections.
Mr Jammeh, who came to power in a coup in 1994, suffered a shock defeat to Adama Barrow, who won more than 45% of the vote.
The US "strongly condemned" Mr Jammeh's statement.
"This action is a reprehensible and unacceptable breach of faith with the people of The Gambia and an egregious attempt to undermine a credible election process and remain in power illegitimately," said state department spokesman Mark Toner.
Continued: http://www.bbc.com/news/world-africa-38271480
