A single viral tweet last week shone a light on the huge chasm opening up in British politics.

It revealed the results of an ICM poll showing 73 percent of voters between the ages of eighteen and twenty-four backing the Labour Party in the upcoming general election, with only 15 percent backing the Conservative Party. The corresponding statistic expressed the opposing intentions of the elderly; among the over-sixty-fives, only some 20 percent will cast their votes for Jeremy Corbyn’s party, with 64 percent backing the incumbent Tory government.

A series of polls produced this weekend made it clear how important this would be for the general election. With the raw data similar across the six companies who surveyed, the Tory margin varied from double digits in ICM and ComRes to four points with YouGov and a single point with Survation. The difference owed to whether the pollsters believed young voters would turn out on June 8.