Yousaf's political future in numbers - and how it may all come down to just one
Humza Yousaf's future as first minister is hanging in the balance ahead of a motion of no confidence next week.
Now, as leader of a minority government, his fate may be hanging on just one vote - that of a former SNP leadership rival.
We take a look at how:
The numbers
In the Scottish parliament, the SNP has 63 seats out of 129, two short of an outright majority;
The Conservatives have 31;
Labour has 22;
The Greens have seven;
The Liberal Democrats have four;
The Alba Party has one;
There is also one presiding officer Alison Johnstone, who is both an MSP and Scotland's equivalent of the Commons speaker.
How the numbers are expected to fall
The motion of no confidence was brought by the Scottish Conservatives.
The Greens, Labour and the Lib Dems have all said they are backing the motion.
That would translate into 64 votes against the first minister versus 63 SNP votes.
So the one Alba vote is expected to be key.
How it may all come down to one ... Ash Regan
Once an SNP leadership rival to Mr Yousaf, Ash Regan defected to Alex Salmond's Alba Party last October.
If she backs Mr Yousaf then that would mean both sides have 64 votes.
Ms Johnstone would then be expected to vote in favour of the status quo, so the first minister would survive.
But if Ms Regan votes against Mr Yousaf, then the opposition parties will have 65 votes against the SNP's 63, and the first minister would lose.
He wouldn't be compelled to resign in this situation, but he'd be under huge pressure to step aside.
More to come
And remember, Scottish Labour have lodged a separate motion of no confidence in the Scottish government.
Alba have said it won't back that motion.