Rousseff regains edge in Brazil presidential race as Silva slips

By Anthony Boadle BRASILIA (Reuters) – President Dilma Rousseff has regained a slight edge in Brazil’s presidential race after weeks of aggressive campaigning against environmentalist Marina Silva, who is losing some voter support in the campaign’s homestretch, a poll showed on Tuesday. Rousseff would have 42 percent of the votes against 41 percent for Silva in a second-round runoff if the election were held today, a one point advantage that amounts to a statistical tie as it is within the margin of error of the survey by polling firm MDA. …