Support for the United Kingdom rejoining the European Union is at its highest level since the Brexit referendum, according to Professor Sir John Curtice, a leading expert in public opinion polling. He reported that 61 percent of Britons now say they would vote to rejoin the EU, compared to 39 percent who would vote to stay out. This is the highest figure recorded since 2016. However, Sir John noted that most people who voted in the 2016 referendum have not changed their minds, with only about 18 percent of those who voted to leave the EU now favoring rejoining, and 11 percent of those who wanted to remain opposing it. Demographic changes have played a role in the shift in public opinion. Over the past decade, a new generation of voters—those too young to participate in the 2016 referendum—have come of age and are now eligible to vote. These younger voters are heavily in favor of rejoining the EU. Additionally, some older voters who were more likely to support leaving the EU have passed away, and polls suggest that others who could have voted in 2016 but did not are now in favor of rejoining. Sir John emphasized that public opinion has shifted despite minimal political advocacy for rejoining the EU prior to 2024. He suggested that if political leaders were to actively argue for rejoining, they could further increase support. However, he warned that the way the argument is framed could determine the outcome of any future referendum. He mentioned that Andy Burnham, a prominent Labour politician, would need to effectively promote a post-Brexit reset with Europe to gain public support. Public concerns remain about potential requirements to join the eurozone or the Schengen travel area if the UK were to rejoin the EU. While the pro-rejoining side has a stronger baseline than during the 2016 referendum, the argument would still need to be won. Sir John criticized Labour's "keep quiet" strategy on Brexit, stating that it could hinder public acceptance of changes to Brexit policy. He noted that while Labour has begun discussing Brexit, the expected UK-EU summit later this year, focusing on food and drink exports and youth mobility, could be pivotal. The Cabinet Office has been approached for comment.