News wires are confidently reporting that the 1922 Committee has received the required number of letters to trigger a vote of no confidence in Theresa May.
Commentators are saying that yesterday's cancelling of the meaningful vote on May's deal, and her trip to Europe to try to get the EU to offer changes that it has already and forcefully said will not be forthcoming, appear to be the straws that broke the camel's back.
Some are also saying that the vote deferral and the trip are not May kicking the can down the road, but her deliberately trying to run down the clock so that her deal becomes the only option to be voted on.
Tomorrow could be an interesting day.