Support for Colombia's center-right President Juan Manuel Santos has slipped in a survey of voters' intentions for May 25 elections, but he remains the clear front runner in a race that will center on how to end the country's five-decade conflict, Reuters reported. The Gallup poll published on the website of broadcaster Caracol showed Santos would gain 32.5 percent of votes, down 2 percentage points from the previous survey, and leaving him far short of the support needed to avoid a second round of voting. Nonetheless, he retained a 17 percentage point lead over his nearest rival Oscar Ivan Zuluaga from the Centro Democratico party founded by ex-President Alvaro Uribe. Uribe has been a ferocious critic of Santos for engaging in peace talks with FARC rebels who have been fighting the government for five decades. Zuluaga jumped 5 percentage points from the previous Gallup poll to 15.6 percent. -- SPA 23:31 LOCAL TIME 20:31 GMT تغريد