Ugandans vote in presidential, parliamentary and local elections on 18 February, in the third polls since the restoration of multiparty politics in 2005.
President Yoweri Museveni is seeking to extend his 30-year rule and, in vying against seven opposition candidates for a fifth term, he faces his toughest challenge yet.
There are just over 15 million registered electors, out of an estimated population of 37 million.
Who are the main presidential candidates?
President Museveni has been in office since winning a five-year guerrilla war in 1986. At the age of 71, he is one of Africa's longest-serving leaders, and has brooked little opposition to his rule.
His final term was meant to end in May 2006, but in 2005 he won a campaign to lift the constitutional term limits.
Mr Museveni faces criticism from the West over the country's worsening human rights record, and has responded by accusing Western donors of interfering in Uganda's internal affairs.
Kizza Besigye has stood against his former comrade-in-arms President Museveni in the last three presidential elections on behalf of the main opposition Forum for Democratic Change (FDC).
Amama Mbabazi is another veteran of the governing National Resistance Movement (NRM) to fall out with President Museveni.
He served as prime minister in 2011-2014, when he was dismissed after announcing he would launch a rival presidential bid. He is standing as an independent for the GoForward pressure group.
Ugandan media reports say the government is concerned at Mr Mbabazi's challenge, as he is an insider with extensive connections who could possibly siphon off votes from NRM supporters looking for fresh faces at the top.
The other candidates are unlikely to have any meaningful impact on the outcome of the elections.
Source: bbc news
Source: bbc news