Theresa May is meeting the 1922 Committee at 5pm today, having lost her Brexit Secretary and her Foreign Secretary within 24 hours. Most felt that, while under considerable pressure, Mrs May was likely to weather the departure of David Davis, but Boris Johnson’s decision to leave the Government has left her extremely vulnerable. If Mrs May’s tenure appeared tenuous before, it looks impossibly difficult now. This is now about the leadership of Brexit, the Tory Party, and the country.

Here is the Edelman team’s analysis of the situation as it stands, featuring insight from Will Walden, former Chief Political Adviser to Boris Johnson: