This could be the biggest week of the Tory leadership campaign: postal ballots will start arriving on members’ doormats in the coming days and the chances are that most will fill them in and send them back pretty sharpish. Both candidates to be Prime Minister are consequently extremely busy: Rishi Sunak has been making tax cut promises (of the ‘not yet ‘variety: more on that from Fraser here) this morning, while Liz Truss has been talking about help for farmers suffering post-Brexit labour shortages.