Over the past week, Britain has been shaken by a political earthquake. The previously marginal UK Independence Party (UKIP) burst onto center stage to capture almost a quarter of the votes in local elections around the country, threatening to upset the stable two-party system that has existed for the last century. Nigel Farage ‑ the Claret-quaffing, cigar-smoking former city trader who leads the party ‑ breathed life into abstract ideas of sovereignty by highlighting the inability of European Union member states to control their borders. He predicted “hordes” of Bulgarian and Romanian citizens legally migrating to the UK. The mainstream parties are struggling to respond.