That he has “broad support“, that he has “been astonishingly effective”, and that he has “revitalised Labour”. I wish all those things were true.

Unrelated: while YouGov is indeed online, it chooses which people to send the surveys to and has long-term profiles on each of them, so unlike a silly Twitter poll it has decent statistical relevance and the biases seem to be persistent, well quantified, and generally accounted for — you shouldn’t dismiss it just because you don’t like what it’s saying.