Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Are We Witnessing the Unmaking of Great Britain? Jamie Dettmer Almost whatever happens Dec. 12, after Britons have voted for the third time in almost four years in a general election, the country is likely to emerge even more disunited than before, analysts and commentators worry. The vote may well mark an important stage in the unpacking of the union of Great Britain and Northern Ireland, otherwise known as the United Kingdom, they say. According to the five living former British prime ministers, the turmoil caused by Brexit has plunged Britain into an existential crisis, and has turned the upcoming poll into the most consequential British election of modern times. If Prime Minister Boris Johnson's Conservatives win, Northern Ireland will end up being pushed closer to the Republic of Ireland, thanks to the most recent Brexit deal negotiated with the European Union that would align the British-run province with EU rules on food safety and other standards. That would require customs officials to check goods entering Northern Ireland from mainland Britain. Meanwhile, if Jeremy Corbyn, seen as Labour's most left-wing leader since the 1920s ends up in Downing Street, it will likely be thanks to support from the Scottish Nationalist Party. That party has made clear its price will be another Scottish independence referendum, which stands a high chance this time of passing, unlike the poll in 2014. Few pollsters believe Labour can win enough seats to form a majority government. Nicola Sturgeon, the SNP leader and Scotland's first minister -- the head of the Scottish government -- said she was sure Corbyn would agree to another independence plebiscite if he becomes prime minister. He may not have any choice. Some veteran politicians, including former Prime Ministers Tony Blair and John Major, worried even before the 2016 British referendum on European Union membership that the plebiscite could well set in motion the conditions for a break-up of the United Kingdom. With large majorities in Scotland and Northern Ireland opposed to Brexit, the writing was on the wall, they said. Blair warned that at the very least it would "completely change the dynamic of Scottish independence." He and others said the demand for a second independence referendum would be "unstoppable" if the Scottish pro-European views are discounted. .