With such volatile voters, all poll bets are off for a snap election

Nigel Farage at a Brexit party rally this month: he risks becoming Brexit’s spoiler, rather than its saviour, by splitting the Leave vote. Photograph: Peter Summers/Getty ImagesA “cold snap” election is the talk of the town, with the Commons set to vote on Monday on Boris Johnson’s request for an early election on 12 December. If they grant him his wish – and at the moment it looks a big if – MPs of all parties will be taking the biggest gamble in modern polit