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The latest survey from YouGov, which quizzed 1,623 UK adults on their voting intention from September 30 until October 1, showed the Labour Party languishing in third place on just 21 percent - down a percentage point from the last poll a few days earlier. They have been leapfrogged by the Liberal Democrats - led by Jo Swinson - who are now on 23 percent - up from 21 percent in the previous survey. But both parties are still a long way behind the ruling Conservative Party, who hold a 10-point lead over the Lib Dems on 34 percent - stretching their lead by a single percentage point.

The latest results will send alarm bells ringing throughout Labour because political parties looking to mount a serious challenge in any general election always expect a significant bounce following a party conference. But Labour’s annual event in Brighton was dominated by bitter divides that threatened to split the party into several pieces over the leadership’s conflicting stance on Brexit. A crunch vote was held, with the party’s delegates siding with leader Mr Corbyn, choosing to keep their Brexit position neutral at the next general election. This appears to have had a hugely detrimental impact among voters, who are seemingly losing patience with the party’s flip-flopping with Brexit.

Jeremy Corbyn has suffered a fresh blow in a major new poll

Labour's support has slumped as Jeremy Corbyn looks to become Prime Minister

Concern will be growing more within Labour after the party, frequently seen as the closest challengers to Boris Johnson’s Tories, had recorded a high of 25 percent at the start of September. But as the Brexit divides have been magnified, the opposition party has been sliding since then, falling four points to its current rating of 21. Mr Johnson became Prime Minister just over two months ago and rival Mr Corbyn quickly clashed with him in the House of Commons, demanding a general election take place. But the Labour leader has continued to backtrack on this, forming a cross-party alliance to block the Prime Minister from taking the UK out of the EU with a no deal Brexit on October 31. READ MORE: Bercow orders Abbott to sit down as she forgets number of questions

Jeremy Corbyn battled against bitter splits in Labour during their party conference

He is now refusing to commit to a general election and has insisted Labour will concentrate its efforts on preventing a no deal departure. But the Lib Dems have experienced contrasting fortunes and are experiencing a resurgence under Ms Swinson, who took over from Sir Vince Cable as leader in July. At the start of last month, the party was favoured by just 16 percent in a YouGov poll but has added seven points to reach its current rating of 23 percent - its highest rating since May 29. At the Lib Dems conference in Bournemouth, Ms Swinson turned the tables on Labour and made its move on Brexit. DON'T MISS

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Jo Swinson has led the Liberal Democrats on a resurgence since becoming leader

Boris Johnson has led the Tories to a 10-point lead in the poll

She committed her party to revoking Article 50 and cancelling the UK’s departure from the European Union altogether. Elsewhere in the latest poll, the Brexit Party has fallen to its lowest rating in more than four months as its early momentum starts to fade. Nigel Farage launched the party in February, and they soared to a high of 26 percent on June 6, leapfrogging both Labour and the Lib Dems to take second place. But they have been on a steady decline since, and in the most recent survey, have fallen to just 12 percent and a steady fourth place behind Labour.

Jeremy Corbyn's key Labour Party policies

Mr Corbyn has also suffered a further blow as British voters continue to be overwhelmingly convinced Mr Johnson is the best person to lead the country. The same poll saw YouGov ask participants: “Which of the following do you think would make the best Prime Minister?” Mr Johnson’s popularity has grown, with 40 percent choosing him - up from 38 percent when this specific poll was last conducted on September 18. Labour leader Mr Corbyn’s score remains unchanged on 22 percent - a massive 18 points behind the current Prime Minister. Mr Johnson’s popularity among the British is further magnified as Theresa May was on 29 percent when a poll was conducted on June 6 - just days before she announced her resignation.

Nigel Farage has seen the Brexit Party slump in recent polls from YouGov

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