Former Roman Catholic bishop Fernando Lugo has won Paraguay's presidential election, ending more than six decades of rule by the Colorado Party.
With results declared in most polling stations, Mr Lugo has 41% of the vote. His main rival, Blanca Ovelar of the Colorado Party, has 31% and former army chief Lino Oviedo 22%.
Mr Lugo brought together leftist unions, indigenous people and poor farmers into a coalition to form the centre-left Patriotic Alliance for Change.
Mr Lugo's victory brings to an end one of the longest periods of continuous rule by any party in the world - the Colorado Party has been in power since 1947. Inequality and corruption are persistent problems and poverty remains widespread, particularly in the rural areas, with many are forced to leave the country in search of work.
The switch in power is also the latest in a series of election triumphs by leftist, or centre-left, leaders in South America.
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