The Tories are about 70% Remain in Westminster, but about 70% Leave in the membership and voters. That imbalance will have to be rebalanced.
They have avoided the membership having a say on the leader since 2005, largely due to the political shenanigans of the MPs.

The Labour Party are about 95% Remain in Westminster, but about 40% Leave in the membership and voters, but that 40% is hugely swung by the big cities, especially London.
But they have many pockets that are like the Tories with 70% members and voters for Leave. That is demonstrated that most Labour constituencies voted Leave - around 160 out of their 262.

The Thread is "New political party?"

Other than backward references to UKIP no one has mentioned the Brexit Party yet.

I think it's notable as well that whilst we are seeing the indi breakaway (not yet a party) reflected in the polls, we haven't yet seen the Brexit Party reflected in the polls.

It almost seems to me like another establishment stitch up.

I can quite imagine given the electorates low regard for politicians that the new Brexit Party could currently command 20-30% in the polls if it was offered as an option.