There are likely to be far more people who don't want a second referendum. Leavers, for a start, plus those who voted remain but have since accepted the will of the majority. We all know that the vast majority of Westminster politicians are pro Brussels - unlike the electorate. If there appears to be some sort of coup in the offing to thwart the will of the British people, that might just not go down too well. Any sort of hung Parliament or coalition would then be far more likely to involve UKIP than the Lib Dems (who are still toxic with many voters for getting into bed with the Tories anyway).Er, the Lib Dems are campaigning on the ticket of giving the British public a chance to vote on the deal, so it might not come to us quitting the EU in the first place. Nothing cloud cuckoo about that. There is nothing done and dusted about Brexit at all. It was a non-binding referendum with a paper thin majority where nobody actually knows what Brexit will mean. With that in mind, a referendum on the deal seems a perfectly reasonable policy.