Laura Kuenssberg

Although I'm explaining the way the mood seems to me to have moved between Friday and Saturday afternoon.

If he were to decide to try and fight, what I expect would happen then is you would get Andy Burnham supporters either publishing or going in with a list of well over 100 MPs who would back them.

I think in that situation, you might then see resignations start to begin so that publicly the government starts to kind of fall apart in front of our eyes.

And I think people want to avoid that.

They don't want to have that kind of the Jenga tower just falling down.

Far better to see something kind of orderly.

But, you know, in politics, there's nothing orderly about a prime minister leaving.

First, however you look at it, you might be able to avoid the sort of car crash where you have a couple of days of really embarrassing things with people coming out and saying ever more terrible things about Keir Starmer in a personal, mean and nasty way.

But a change of prime minister is such a huge thing.

What does that say to our allies around the world that we look less stable than we pretend to be or claim to be?

What does it say to the financial markets?

They don't know who the next chancellor might be.

The country's got a lot of debt.

What effect does that have on the price of borrowing?

Like it or not, this country owes an awful lot of money to the financial markets that has to be paid back.

And that's a big cost to taxpayers, a big cost to the country.

What does it say also to people in various different, you know, whether you're in the health service or whether you're in defence or whether you're working in the Department for Work and Pensions?

You have a kind of a breach, a break in the progress of decision making.

You know, every week the government's meant to be making thousands and thousands of decisions.

If you change the person at the top, they might come in with a whole load of new ministers.