Pickman's model
Starry Wisdom
their current social base is in decline, but the tory party hasn't survived hundreds of years without a certain electoral agility.I'm not suggesting they could disappear but an existential crisis doesn't neccessarily mean that - they exist to be a party of govt, to wield power but their social base is in rapid decline, they're struggling to remain unified, and apart from 2015 when they squeaked it they haven't won a majority since 1992. Most Tory MP's care more about having strong Tory govts than they do about Brexit.