RIO DE JANEIRO, Aug. 29 (Xinhua) -- An opinion poll released Friday showed Brazilian President Dilma Rousseff neck and neck with her major rival, former Senator and Environment Minister Marina Silva, in the presidential race.
According to polling firm Datafolha, support for Silva rose to 34 percent from 20 percent recorded in an Aug. 18 poll, levelling that of the president, who won 36 percent of support in the previous poll.
Silva became the presidential candidate of the Brazilian Socialist Party (PSB) after the previous PSB candidate, Eduardo Campos, died in a plane crash on Aug. 13. Campos garnered only 9 percent of support.
Should Rousseff and Silva enter a showdown after the Oct. 5 election, Silva would win 50 percent of the vote, while Rousseff would get 40 percent, Datafolha projected.
Meanwhile, support for Brazilian Social Democracy Party candidate Aecio Neves dropped to 15 percent from 20 percent in the Aug. 18 poll, the pollster said.
The Datafolha poll was carried out on Aug. 28-29 with 2,874 voters from all over the country.
Besides the latest poll, Rousseff suffered another blow on Friday, as newly released data showed that Brazil's GDP shrank in the first half of this year.
But Rousseff insisted that the contraction "is just a blip." "Brazil has every chance of a resumption" of economic growth later in the year, said the president.