The UK election of 12thDecember 2019–the third election in five years and the second snap election in a row–returned a Conservative majority government led by Boris Johnson and the lowest number of Labour MPs since 1935 . Three-and-a-half years after the 2016 referendum, the government finally had sufficient parliamentary support for Brexit, and at the end of January 2020 the UK left the European Union . The result of the election can largely be explained by the continuing importance of Brexit . The previous election, held in 2017, had seen an increase in party sorting along Brexit lines–Leavers had shifted towards the Conservatives, whilst Remainers shifted towards Labour . The 2019 election saw a continuation of that process on the Leave side, as the Conservatives continued to win over Leavers, but a slight reversal on the Remain side, with some Remainers abandoning Labour for more avowedly pro-EU parties such as the Liberal Democrats.