Presenter Luciano Huck, from TV Globo, published a video on his social networks in which he explains how electoral polls are carried out and defends them against accusations that they would be fraudulent.
Accusations of the institutes responsible for these surveys have been frequent by President Jair Bolsonaro (PL) and allies, such as the president of the Chamber of Deputies, Arthur Lira (PP-AL).
In the video, Huck refutes the suspicion that the polls would be unreliable for interviewing a small portion of the population.
He likens the method to a blood test. “In a blood test, a small sample is enough to tell what happens in your whole body. With the election poll it’s the same thing,” he says.
The presenter continues the explanation, saying that the sampling is based on the census carried out every ten years by the IBGE (Brazilian Institute of Geography and Statistics).
Huck says the methodology works and compares results from previous surveys, from institutes such as Datafolha, with election results.
But he points out that there is always a margin of error, and that surveys only portray the moment they are made. “It’s a portrait of the country at that moment.”
“But what really matters is the following: Brazil does have a serious tradition in electoral polls, carried out by qualified people, with scientific methodology”, concludes the presenter.
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