As so often these days, if you want real political insight, go to Mumsnet. In a web chat there today, John McDonnell has offered extensive proof that – whatever you think of his politics and policies – he is an extremely professional and skilful political communicator.
Mumsnet, as Gordon Brown, Nick Clegg and countless others will remember, is about the toughest gig out there: you’re faced with a bombardment of questions ranging from traditional political analysis to deeply personal issues and of course humour, much of it biscuit-related. Striking the right tone is very, very hard.
These days, Mumsnet is even harder for politicians because an awful lot of users there are (quite reasonably) very angry with politicians over transgender issues.