This morning Guido reported that Tory MPs were under pressure to quit Open Britain over the group’s decision to target Tories in LibDem marginals. Well, Anna Soubry and Nicky Morgan have just resigned from the group:

“As long standing Conservative Party members and MPs it is untenable for us to play any further role in an organisation, such as Open Britain, which is advocating campaigning against Conservative MPs or candidates, and we will not be doing so.”

Dominic Grieve and Neil Carmichael have also quit the group. Really stupid strategic error from Open Britain, what on earth were they thinking?

UPDATE: Change Britain, the Brexit-backing rival to Open Britain, sensibly says it will sit out the election:

“Change Britain will be standing aside during the election period. We are a genuine cross-party campaign and therefore do not believe it is our place to encourage the public to vote for certain candidates during a general election. We will work with whoever gets elected after June 8th to ensure the referendum result is respected.”