Presidential candidate for the Brazilian Workers' Party and current Brazilian President &lt;a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Dilma+Rousseff&amp;family=editorial&amp;specificpeople=1955968 ng-click='$event.stopPropagation()'&gt;Dilma Rousseff&lt;/a&gt; (L) holds a child during a rally at National Confederation of Rural Workers (CONTAG) in Brasilia, Brazil on August 28, 2014. Rousseff is set for a bruising defeat in an October runoff election against popular environmentalist Marina Silva, a poll suggested Tuesday. The survey by polling firm Ibope found Rousseff would come out ahead in the first-round election on October 5 but be forced to face Silva in a second-round vote three weeks later, losing 36 percent to 45 percent.