pfft, this wouldnt change anything, his position is already untenable for a leader of the party of opposition, he cant command the confidence of his own parliamentary party.
the obvious one is to lose Copeland. however this weather makes for an interesting if left-field option, they hold onto Copeland as bad weather is normal for Cumbria, and lose narrowly in Stoke to Tories as Labour and UKIP a like stay at home.
though as you say, really shouldn't even be...