The remaining two UK politicians included in the survey, Deputy Prime Minister Angela Rayner and Liberal Democrats leader Sir Ed Davey, registered net favourability scores of minus 30 and minus 12 respectively.
A focus on perceptions of political parties showed the Green Party had the best favourbility score of minus 5, followed by the Lib Dems with minus 12 and Reform UK with minus 14.
A monthly survey by Ipsos shows the Reform UK leader and Kemi Badenoch are the only senior politicians to improve their favourability rating since January, with positivity about Sir Keir Starmer and Rachel Reeves dwindling.
Ms Reeves is the only politician with a worse net score than the Prime Minister of minus 39, with a fall of three points this month leaving the Chancellor with 14% of the public viewing her positively and 53% negatively.
Meanwhile, the Conservative Party leader received a 0.5 point swing to boost her net favourability to minus 29 as 16% view her positively and 45% negatively.
