I think it's easy to work out. If Brexit goes ahead without any deal the Brexit party will hang on to the voters who supported it, or they may return to Conservative, but those who think no-deal is toxic will be alienated. When a GE hapens those form constituencies which voted Remain will lose their seats so
Conservatives- Brexiteers
+Conservatives-anti-no dealers
+Conservatives -Remain voters.
=not many left!
Water shortages and hosepipe bans



