Support for the Conservative party has dipped in the last few days as the formal launch of Boris Johnson's general election campaign was marred by gaffes and a resignation.
The YouGov poll for Sky News showed support for the Conservatives down two percentage points at 36 per cent, with Labour unchanged at 25.
Data for the poll was taken as Mr Johnson's campaign launch was overshadowed by the resignation of Welsh Minister Alun Cairns, a gaffe about the victims of the deadly Grenfell Tower tower blaze and a "doctored" video of an opponent released by his party.
Commons Leader Jacob Rees-Mogg faced widespread criticism, including from Grenfell survivors and Jeremy Corbyn, after he said people are safer if they "just ignore what you're told and leave", while discussing London Fire Brigade's "stay-put" policy.
Party chairman James Cleverly said Mr Rees-Mogg had "caused a huge amount of hurt and distress" with his comments on Grenfell Tower.
Mr Cairn's resignation as Secretary of State for Wales came after he was accused of lying about his knowledge of an allegation that a Tory candidate had sabotaged a rape trial.
The Liberal Democrats were one point up at 17 per cent and the Brexit Party was unchanged at 11 per cent.
The poll of 1,667 people was conducted between Nov. 5-6 and compares with the previous survey done between November 1 and 4. The election is on December 12.
