Mockus would beat Santos of the La U Party by 32.8 percent to 29.3 percent in the first-round vote and would win a second- round runoff with 47.9 percent of the ballots to 33.6 percent for Santos, according to the poll broadcast today on W Radio. The company’s poll last week had shown Mockus with a 12- point advantage in first-round elections and an almost 22-point lead in the second round. A Centro Nacional de Consultoria poll published last night showed Santos with a slender lead in first- round voting and had the candidates in a statistical dead heat in the second round. A candidate needs more than 50 percent of the first-round vote on May 30 to avoid a June 20 runoff. Read more here. Semana International delivers news about Colombia in English. Find more in our home.