The You Gov poll, published in the same week as the Lib Dems held their annual party conference, puts the Lib Dems on 23%, up four points on the previous poll
One official said Mr Johnson had a “penny dropping” moment at a meeting in Luxembourg on Monday.
Boris Johnson’s motive for an “exceptionally long” prorogation was to “silence” Parliament, Supreme Court justices have heard.
The Prime Minister slipped out after being booed by crowds in Luxembourg at a meeting with the country's prime minister.
The former prime minister has also taken aim at Boris Johnson and Michael Gove in his memoir.
In a bullish lecture, Mr Bercow warned Boris Johnson not to disobey the law by not asking for a delay to Brexit if he cannot get MPs to support a deal
Mr Watson also said the party must push for a new referendum to take place before a general election.
The prime minister is reportedly looking at a plan to block a Brexit extension, but critics say it would be unlawful.
The Prime Minister could apparently be locked up if he does not comply with a new law passed by MPs.
After a humiliating defeat that saw MPs approve a bill blocking a no-deal Brexit, the Prime Minister said the country must go to the polls to ‘sort this out’.