
Why the polls were off in 2020
CNN
President Joe Biden won the 2020 election as polls suggested he would. His victory, however, ended up being tighter nationally and in a number of swing states than expected. The question of why that happened has dogged pollsters since the election.
On Tuesday, a number of Democratic pollsters (ALG Research, Garin-Hart-Yang Research Group, GBAO Strategies, Global Strategy Group and Normington Petts) put out a statement as to why they think their internal polls were off. It jibes with a lot of the analysis I and others have said publicly. Perhaps the biggest takeaway is that the people who aren't answering polls are systematically different than those who do answer the polls. This is likely the case among White voters without a college degree. Additionally, voters who were less likely to turn out but still did seemed to favor former President Donald Trump at higher levels than expected.
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