Peter Kellner was President of YouGov from 2007 to 2015. Prior to that, he worked as a journalist for Newsnight, the New Statesman, and others.
It is not only that Labour voters are more Corbynite than Blairite. So, too, are many Tories.
A third of those who voted in 2015 either changed parties this year or stayed at home. What is going on?
Remain is on course to win, says Peter Kellner.
The latest polls appear to show movement to Remain, but the picture is complex.
Movement to Leave in the polls at this point in the cycle is what we'd expect to see, says Peter Kellner.
There is reason to be sceptical of the surge to Leave, says Peter Kellner.
The Corbyn insurgency has opened up a chasm on the left. His opponents may have to accept that Labour is now an anti-capitalist party – or leave altogether.
Exclusive YouGov research for the New Statesman shows how Corbyn's support base crucially differs from Labour's target voters.