Rishi Sunak’s approval ratings have failed to improve over the summer political break – despite several weeks of Tory policy blitzes intended to win back voters.

The latest Opinium survey for the Observer shows the Conservative have failed to shift the dial in Sunak’s favour, with the prime minister dropping two points in the past two weeks to a net score of -25% (24% approve, 49% disapprove).

Overall, Labour holds a healthy 14-point lead, with 42% of the vote share (+1 compared with a fortnight ago) against 28% for the Conservatives (+2). The Liberal Democrats are on 9% (-2), Reform UK is on 8% (-1) as is the Green party (+1).