Why political realignment will fail — and what it says about the UK’s voting system

The cracks are beginning to show inside British politics — but there is no simple remedy

While MPs were voting on amendments to the Government’s trade bill as it passed through Parliament last week, Sir Vince Cable, the leader of the Liberal Democrat party, was attending a dinner where he was discussing the prospect of a new pro-European centrist party. With both parties in the current duopoly in UK politics split hugely, one wonders…