BASILDON, ENGLAND - JUNE 01:  A Labour supporter holds a poster as Jeremy Corbyn delivers a speech on Labour's plan for Brexit negotiations at Pitsea Leisure Centre on June 1, 2017 in Basildon, England. Polling analysis released yesterday shows the possibility of a hung parliament in next week's General Election with the Conservative Party falling short of an outright majority.  (Photo by Dan Kitwood/Getty Images)