Deltapoll surveyed 1,818 respondents online between 9th and 11th December 2019. Interviews were conducted across the country and the results have been weighted to the profile of all adults. On the basis of the historical record of the polls at recent general elections, there is a 9 in 10 chance that the true value of a party’s support lies within +/-4 points of the estimates provided, and a 2 in 3 chance that they lie within +/-2 points. Deltapoll is a member of the British Polling Council and abides by its rules.