Here's a scenario: let's assume Britain votes to remain within the EU, but only by the narrowest of margins. Following the lead of their members, several Brexit Tories cross the floor to UKIP, throwing the government into chaos. A group of moderate Labour MPs frustrated at their inability to oust Jeremy Corbyn as leader, form an alliance with David Cameron, George Osborne and their rump Tories to try and prop up a minority administration. The Orange Book Lib Dems (all three of them?), after much soul-searching and fearing their continued irrelevance also decide to reluctantly join the alliance. At the next general election, the alliance merges into The Centrist Party and competes with UKIP, Labour, SNP, Greens and rump Lib Dems. Imagine that.