Notable poll

One of the pro-democracy groups who send me emails notified me that YouGov's latest weekly voting intention survey shows a remarkable (and, AFAIK, unprecedented) characteristic - Labour, the Tories, the LibDems and the Greens are all polling at the same level: 16+/-1%. (To be specific, Labour and the Tories are on 17%, the Greens on 16% and the LibDems on 15%.) This seems to be the product of long-term Tory decline, shorter-term Labour decline, LibDems being a little bit above their usual level, and the Greens having a significant rise since Zack Polanski became leader and began making himself widely known.

Time series here: https://yougov.co.uk/topics/politics/trackers/voting-intention