So... how big is the chance that the LibDems will promise to try to reverse Brexit, or at least go for the softest possible Brexit, and everyone who wants to re

So... how big is the chance that the LibDems will promise to try to reverse Brexit, or at least go for the softest possible Brexit, and everyone who wants to remain votes for them, and they would get 51%, or at least enough to force a coalition government? Probably zero, especially given the weirdo FPTP system, but I'm curious anyway.