Dem pollsters acknowledge ‘major errors’ in 2020 polling

A group of top Democratic Party pollsters are set to release a public statement Tuesday acknowledging “major errors” in their 2020 polling — errors that left party officials stunned by election results that failed to come close to expectations in November.

In an unusual move, five of the party’s biggest polling firms have spent the past few months working together to explore what went wrong last year and how it can be fixed. It’s part of an effort to understand why — despite data showing Joe Biden well ahead of...