The Brazilian stocks touched a new height after a poll result favoring Marina Silva against President Dilma Rousseff came in. The biggest benefactor was the state-controlled energy firm Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR). Its shares touched a 52-week high of $20.87 and closed at $20.65 on September 2, 2014. According to the survey, Rousseff…