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Economist and former World Bank official Rodrigo Chaves was projected to win Costa Rica's presidential election with around 52.9% of the vote, according to the electoral tribunal's preliminary partial tally of Sunday's run-off ballot.
Rival candidate and former Costa Rican President Jose Maria Figueres was trailing with 47.1%, the tally showed.
(Reporting by Diego Ore, writing by Cassandra Garrison)