informalNo chance at all:the scheme has a snowball’s chance in hell of being accepted...
And the chances of the budget being balanced is a snowball's chance in Hell.
I can't remember another archaeological survey where the competition has been so fierce, and if I thought that they had a snowball's chance in hell of finding anything out there, I'd be worried.
But the truth is he hasn't a snowball's chance in hell of being elected.