The uncertainty over Brexit - the United Kingdom leaving the European Union - is spilling into its fourth year, since the fateful 2016 referendum. While the EU has allowed the UK more time to negotiate a divorce deal (the third such postponement this year), it seems that an election may be the only way out of the Brexit impasse.

Here’s what you need to know:

THE LATEST
UK Election in Numbers

THE MAIN PARTIES CONTESTING AND WHERE THEY STAND ON BREXIT

FOR BREXIT: Conservative Party, Leader - Boris Johnson
Britain's Prime Minister Boris Johnson poses for a photo wearing boxing gloves during a stop in his General Election Campaign trail at Jimmy Egan's Boxing Academy in Manchester, Britain November 19, 2019. Frank Augstein/Pool via REUTERS


IN THE MIDDLE GROUND: Labour Party, Leader - Jeremy Corbyn
Britain's opposition Labour Party leader Jeremy Corbyn is seen during a visit to Birkenshaw Sports Barn as part of his general election campaign, in Uddingston, Britain November 13, 2019. REUTERS/Russell Cheyne/

NO BREXIT: Scottish National Party, Leader - Nicola Sturgeon
Scotland's First Minister Nicola Sturgeon attends a news conference in Berlin, Germany, September 18, 2019. REUTERS/Hannibal Hanschke