Tories will be wiped out at the next GE where they are Labour Lite & the Brexit Party are the new centre-right conservative party. They are also taking considerable northern Labour working class votes, where Labour now only do identity politics to appeal to the Islington Champagne socialists.
Many former Conservative voters don't trust the Tories after May's constant lying & will never vote for them again.
If there was a GE tomorrow & same percentages as the EU election then Brexit Party 440 seats, Labour 93 & Tories 1. Latest GE poll has Brexit party in second 1% behind labour & the Tories a distant 4th only just in front of the Greens. As it is a first past the post, the Tories are largely wiped out on this polling.
What it does mean is that all of the current parties with Westminster MPs will put off a GE for as long as possible. Peterborough by election on the 7th of June the Brexit party are leading in the polls & may well have their first MP next week. If the Tories end up with two remain MPs for the members to vote on as PM, that will definitely signal the end of the Tory party.