The Uganda People's Congress was founded in 1960 by Milton Obote, who led the country to Independence and later served two presidential terms under the party's banner.
Obote was still party leader at the time of his death in October 2005, although he had previously announced his intention to step down.
On May 14, 2010, the party elected Dr. Olara Otunnu, a former United Nations undersecretary-general for children and armed conflict, led the party. He replaced Obote's widow Miria.
The Uganda People's Congress dominated Ugandan politics from independence until 1971, when Milton Obote was overthrown by Idi Amin. The party returned to power under Obote in 1980 until he was overthrown again in 1985 by Tito Okello. The history of the UPC is intertwined with the ethnic divide that has plagued Uganda since it was a British protectorate.
As Independence approached in the 1940s-1950s, it was clear that the Baganda (the largest ethnic group) wanted autonomy in Uganda, and the Buganda king's party Kabaka Yekka ("The King Only") emphasised this desire.
However, this was not favoured by most Ugandans of other tribes and among some Buganda educated elite who formed an alternative party, the Democratic Party, to aspire for national unity. Although unpopular in Buganda, the Democratic Party had widespread support in the rest of the Bantu-speaking South.
Into this void, there emerged an alternative - the Uganda National Congress (UNC). Although led by a northerner (Milton Obote), the UNC appeared more modernist and accommodating and attracted many people.
The UNC formed a number of alliances with other parties and emerged as the Uganda People's Congress (UPC). The three parties (Kabaka Yekka, UPC and the Democratic Party) contested the first pre-Independence election.
As expected, Kabaka Yekka won most of the seats in Buganda and the UPC won most seats in the North and East. However, the Democratic Party (DP) led by Benedicto Kiwanuka emerged as the largest single party. Kiwanuka was on the verge of becoming the first Prime Minister of independent Uganda when he was thwarted by a surprising alliance between the UPC and Kabaka Yekka.
The Kabaka was afraid that DP would remove the Monarchy in favour of a more modern-looking Uganda. As for the UPC, Milton Obote, realising he had lost the election, saw the alliance as the way to power.
In return, Obote offered the Kabaka a ceremonial role in the new administration and the retention of all royal powers. The UPC/KY alliance thus formed Uganda's first government with Milton Obote as Prime Minister.
The alliance between the UPC and Kabaka Yekka did not last long. After four years in power, Milton Obote ordered a military attack on the Kabaka's palace in 1966. The Kabaka escaped to London and Obote declared himself President of Uganda.
This action, more than anything else, began the decline of the UPC as a popular party in Uganda. As his unpopularity grew, Obote increasingly turned to his Northern home support rather than trying to strengthen the party in the central and south. The 1969 elections were cancelled and Obote became dictatorial. His government was overthrown in 1971 by Idi Amin.
The UPC returned in 1979 after Idi Amin was overthrown. Obote as leader of the UPC was closely aligned to the Military Junta that had replaced Idi Amin and rather than strengthen the support of the party in the South of Uganda took up a more military approach.
The army (traditionally dominated by northerners) was a brutal machine that carried out numerous atrocities. This polarised the North/South divide with the UPC being perceived more as a northern party than ever before. Southerners turned to the Democratic Party and a smaller party called the Uganda Patriotic Movement (UPM) led by Yoweri Museveni.
In the elections of 1980, there was overwhelming suspicion that the UPC had rigged the result with the help of the Military commission of Paul Muwanga.
This perception was further enhanced when Obote appointed the head of the Military Junta, Paulo Muwanga as his Vice-President when the UPC was declared the winner of the elections. A war broke out in Uganda when Yoweri Museveni rejected the result and went to the bush to fight the government.
When Museveni came to power in 1986, he suspended political party activities and Uganda was placed under the broad-based Movement system. Political parties returned in 2005 after a referendum that allowed them to operate legally.
On November 28, 2005, Obote's widow Miria was elected party president. Miria Obote was UPC's presidential candidate in the 2006 general election.
Milton Obote had died in exile a few months before. The UPC's traditional heartland in the North appeared uninterested in the UPC without Obote, but still opposed Museveni. This time they turned to Museveni's main opponent Kizza Besigye who led the Forum for Democratic Change (FDC).
After the elections, the party suffered many high level defections to Museveni's ruling National Resistance Movement and to the FDC. These included former senior party officials Badru Wegulo and Henry Mayega who joined the NRM.
The UPC's poor performance in the 2006 elections forced the party to review its place in Ugandan politics. Uganda's political landscape is changing from regional based parties to personality driven politics.
The party needed to find a leader with a recognised calibre in politics. The party chose Dr. Olara Otunnu, a former UN undersecretary general for children and armed conflict. The election, however, revealed internal conflicts in the party. Otunnu served under Tito Okello as Foreign Minister and was seen by some as part of the putsch that overthrew the last UPC government in 1985.
Otunnu's main rival at the party elections was Milton Obote's son Jimmy Akena, the Member of Parliament for Lira Municipality showing the Obote family still cherishes the party that Obote created.
The party has now been embroiled in wrangles and leadership struggles between Otunnu and Akena, with the latter being declared as the new president of the party, while Otunnu and some officials dismiss the claims.
As the party gears up for the 2016 elections, there is still uncertainty on who will carry their flag.