Meanwhile, the same proportion accepted there were "pockets" of antisemites within Labour, again including the party leader.
When asked those who had voted Labour in 2017 about the problem, 39 per cent said they felt there were people within the party who held anti-Jewish views.
Mr Corbyn has attempted to stop the tide of criticism over his failure to clamp down on the issue by stating he is a "militant opponent" of antisemitism.
New General Secretary Jennie Formby has also pledged to implement the recommendations made by Baroness Chakrabarti in her 2016 report in full.
But last week there was further evidence of anti-Jewish sentiment within the party when Thangam Debbonaire, the MP for Bristol West, was asked to defend attending the recent Enough Is Enough protest in Parliament Square by her own local party.
The motion censuring the MP for attending the protest was defeated but 89 party members voted in favour of it.
And Labour continues to deal with a massive backlog of disciplinary action against members accused of antisemitism.
Deltapoll interviewed 1,010 people online on 5-6 April. The results were weighted to reflect the profile of all UK adults.
In a new essay published in the Guardian on Saturday Howard Jacobson attacked claims that some allegations of antisemitism were not genuine.
He wrote: "Jews know what antisemitism is and what it isn't. To invent it would be a sacrilege."
Deltapoll interviewed 1,010 people online on 5-6 April for their poll and the results were weighted to reflect the profile of all UK adults.
