Theresa May has always insisted she’ll put duty before ambition, and tonight she made the ultimate sacrifice in a statement to her MPs just a short while ago in committee room 14.
She was, she said, prepared to leave her job earlier than she’d intended in the national and party interest.
It is a high-stakes gamble. And with the DUP keeping their counsel tonight, it’s uncertain if it will pay off.
In the meantime, MPs are as we speak voting on a plan B to the Prime minister’s plan – from staying in the customs union to cancelling Brexit altogether.