POLITICS Women on Top in Latin America By Fox News Published October 7, 2010 5:25pm EDT | Updated December 19, 2016 8:03am EST {{#rendered}} {{/rendered}} The Workers Party candidate is the front runner and poised to become Brazil's first female president. But she first has to capture the most votes in the Oct. 31 runoff election. (AP) President of Costa Rica. Elected in May of this year. (AP) President of Argentina. 2007-present (AP) President of Chile. 2006-10. (AP) President of Panama. 1999-2004. (AP) President of Nicaragua. 1990-97. (AP) President of Argentina.1974-1976 (Getty)