Nick Hargrave: Yes, I compiled an attack dossier on Johnson. But at best, there’s a real purpose to opposition research.

It works best when painting a substantive contrast on issues that voters care about. And here are four strategic choices for the Conservatives.

Nick Hargrave: The economic consequences of No Deal might only be temporary. But the political ones would dwarf Black Wednesday.

Even the near threat of such an outcome could outscale 16th September 1992 many times over in terms of setting political perceptions.

Nick Hargrave: A Conservative split is inevitable – the question is how to manage and minimise it

The tension can be seen in the way the Prime Minister’s sensible effort at Chequers clashes with the deeply-seated values of many in the Party’s grassroots.