UK election: The pollsters’ experimental election

… From the pollsters’ point of view this is an experimental election. We all got it wrong in 2015 and we are all trying different methods to get it right this year. …

There are lots of differences between how different polling companies are doing their sums. Some poll online, some by phone. Some weight by different things like education, political interest, newspaper readership. Some do different things with people who say ‘don’t know’.

For once, however, the difference in the polls in this election is easy to understand – it is almost wholly to do with how pollsters treat turnout. CONT.

Anthony Wells (YouGov), Research Live