The occasional glimpse of goings-on down UKIP way remind one of nothing so much as a particularly hyperactive and foetid Students Union. How Michael Crick can bother himself to figure out what's happening is beyond me.
Conventional wisdom is that it's all part of Theresa May's miraculous legacy: the only cohesive force she faces is the SNP.
But hang on: doesn't UKIP have a vital role over the coming few years - finishing off Corbyn's Labour in the North, and disciplining any back-sliding Tory MPs - ?
One of the big lessons of the last 120 years of British politics is that we are (were?) naturally a two-party state. If UKIP can be reckoned on to self-destruct (and they are evincing that rather effectively), one can see Owen Smith's vision rather clearly. And indeed John McDonnell's ... May rather needs these two and their respective camps to wreak their own acts of fratricide.