Labour's 'Burnham Bounce' Not Yet a Decisive Lead, Says Pollster

Labour is experiencing a 'Burnham bounce' in the polls, but the surge in support is not yet substantial enough to guarantee a significant electoral advantage, according to Professor John Curtice. While the party has seen an uptick in its ratings, it still needs to recapture working-class, pro-Brexit voters who now largely support Reform UK.

Recent polling indicates that Labour has overtaken Reform in the surveys, a development attributed to Andy Burnham's arrival as leader. However, this shift has coincided with a decrease in the number of 2024 voters defecting to Reform from Labour. The same trend is also evident among Conservative voters, who have historically shown a greater tendency to switch to Reform than Labour voters.

Despite these shifts, the Conservative Party's poll ratings have seen a slight improvement, reaching 20% for the first time since the spring. This suggests that Labour faces a formidable challenge in convincing a broad spectrum of voters of its policy effectiveness. The success of Labour's electoral prospects in 2029 will hinge on whether voters perceive that Burnham's government is successfully addressing the nation's policy challenges, which remain as significant as those faced by his predecessor.

Analysis of voting intention data from June to July 2026 shows Reform UK initially leading, averaging 28% before declining to 24%. Labour's support grew from approximately 20% to 25% during the same period, moving ahead of Reform after July 20, when Burnham became Prime Minister. The Conservatives remained relatively stable, hovering around 19% to 20%, while the Green Party saw a decline from about 14% to 11%. The Liberal Democrats maintained their position around 11%.

Key dates in this period include Sir Keir Starmer's resignation as Labour leader on June 22, Nigel Farage triggering a by-election on July 7, and Burnham's assumption of the Prime Minister role on July 20. These events are reflected in the polling averages, with the data points indicating individual poll results and the lines representing the averaged trends.