Damien

Survation got it close and also YouGov did a model based on the underlying data in their own polling which showed a hung parliament including Canterbury and Kensington going to Labour. Others were well off.

It came down to young people. YouGov and Survation believed there would be a higher turnout amongst the under 40s and they these people would largely vote Labour in higher numbers than before. The others thought that because these groups tend to vote in fewer numbers they would discount some of them in their weightings. In the end the former was the correct assumption.