Template:Brexit polling summary

Opinion polling overall showed an initial fall in support for Brexit from the referendum to late 2016, when responses were split evenly between support and opposition. Support rose again to a plurality, which held until the 2017 general election. Since then, opinion polls tended to show a plurality of support for remaining in the EU or for the view that Brexit was a mistake, with the estimated margin increasing until a small decrease in 2019 (to 53% Remain : 47% Leave, ). This seems to be largely due to a preference for remaining in the EU among those who did not vote in 2016's referendum (an estimated 2.5 million of whom,, were too young to vote at the time). Other reasons suggested include slightly more Leave voters than Remain voters (14% and 12% of each, respectively, ) changing how they would vote (particularly in Labour areas) and the deaths of older voters, most of whom voted to leave the EU.