I missed this at the time (7th August) but picked it up on Politics Home which I retrospectively search for ‘reports’ every so often.
Cummings has a plan for victory whereby the Tories sacrifice up to 30 remain-leaning seats across England & Wales to the Lib Dems but win a larger number from Labour. They achieve this by keeping to their firm Brexit line thus keeping the Brexit Party down, splitting the two remain parties’ vote, and coming through the ‘middle’ to win with quite a low vote but enough to do so.
The problem is that Cumming’s strategy, typically Anglocentric, or not giving a for the Boris-hostile Scottish Tories (?), will not work in Scotland. Here, the Tory vote will split with remainers going to the Lib Dems, allowing the SNP to barge through the ‘middle’ and take back the marginal seats which they lost in 2017. Perhaps he has factored in that loss?