More than 4,000 ANC delegates crammed into a marquee in the central city of Bloemfontein erupted into wild cheers when Zuma was confirmed in the top party post after comfortably seeing off a challenge by Deputy President Kgalema Motlanthe. Given the ANC's dominance at the ballot-box less than two decades after the end of apartheid, 70-year-old Zuma is virtually assured a second, five-year term as President of South Africa in 2014 elections.
The rand briefly edged higher against the dollar, reflecting relief among investors at the prospect of policies remaining largely unchanged. After the vote, the beaming president, who secured 2,995 votes out of 3,977 cast, walked on stage to shake hands with his fellow 'comrades' - a label reflecting the ANC's roots in the communist-backed struggle against decades of white-minority rule. Zuma, a polygamous Zulu traditionalist, came to power in 2009 amid the first recession in 18 years and has had a chequered economic record, culminating in violent labour unrest in the mines this year that triggered two downgrades in South Africa's credit ratings.
He has also been dogged by personal scandals, including fathering a child by the daughter of a close friend. Despite this, his popularity within the party is overwhelming. "I don't care what people say about Jacob Zuma," said Sinovuyo Kley, a delegate from the impoverished Eastern Cape. "When you hear him sing, you know he is one with the people. He speaks our language and knows our struggles."
Zuma's re-election had looked likely for much of the year, making the main talking point of the five-day Bloemfontein conference the political renaissance of Ramaphosa after a decade-long absence to focus on his business interests. Attention was also diverted by the arrest of four whites on suspicion of a plot to bomb the meeting and execute Zuma and top ministers as part of a plan to carve an independent Afrikaner state out of Mandela's "Rainbow Nation".
Having risen to prominence as a charismatic union leader in the 1980s, Ramaphosa became the ANC's main negotiator in the talks that led to historic all-race elections in 1994 and Mandela's appointment as South Africa's first black president. He was also tipped as a successor to the revered Mandela - now 94 and recovering in hospital from a lung infection - but gradually removed himself from politics when the job went to party stalwart Thabo Mbeki in 1999. It was unclear just how much impact Ramaphosa's inclusion in Zuma's inner circle could have on the ANC government.