Vote Intention Poll Performance: General Election 2019
How accurate were the pre-election polls?
In the 2015 General Election, there was a systemic polling error which caused a large underestimation of the Conservative lead. In 2017, there was a wide spread of vote intentions — but, on average, underestimated Labour’s vote share by about five points.
This article looks at the final pre-election polling performance for the 2019 General Election.