Brazil's Rousseff overtakes Silva in potential Oct runoff -poll
BRASILIA, Sept 22 (Reuters) - Brazilian President Dilma Rousseff has overtaken her closest rival Marina Silva and has a slight lead in a likely second-round presidential election runoff in October, a new opinion poll showed on Tuesday.
Rousseff would win the runoff by 42 percent of the votes against 41 percent for Silva, who was leading by almost three percentage points in the previous survey by polling firm MDA two weeks ago.
The MDA poll commissioned by the transport industry lobby CNT surveyed 2,002 people between Sept 20-21 and has a margin of error of plus or minus 2.2 percentage points. (Reporting by Anthony Boadle Editing by W Simon)
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