Which polls get it right? Compare the errors and biases of each polling firm
We measured their accuracy and deviations to the left or right, in all elections since 2018.
Polls are a good way to predict election results in Spain, with final surveys typically deviating from the actual outcome by around two points per party. Despite being judged harshly, they provide an indication of a country's vote when many people are still undecided. The article examines whether some polling agencies are more accurate than others and if they tend to make the same mistakes.
Written by urgent.news from El Pais's report — not a translation of it. Machine-written — may contain errors; check the original before relying on it.
