A small but stubborn error affected polls across the board
“For the third presidential election in a row Donald Trump has stumped America’s pollsters. As results came in on election night it became clear that polls had again underestimated enthusiasm for Mr Trump in many states. In Iowa, days before the election a well-regarded poll by Ann Selzer had caused a stir by showing Kamala Harris ahead by three percentage points. In the end, Mr Trump won the state by 13 points”.
Fonte: The Economist
