Ukip is on track for victory in the European elections later this month, according to a YouGov poll for Sky News.
Nigel Farage’s anti-EU party had the support of nearly a third (31 per cent) of respondents, putting it six points ahead of Labour on 25 per cent.
The Conservatives were in third place with 23 per cent, while the Liberal Democrats amassed just nine per cent of votes.
The poll, which was carried out last week, shows that Ukip has been gaining momentum not only at the cost of the Tories, but also of Labour.
While support for the Conservatives (and the Liberal Democrats) has remained fairly static, Labour has seen a decrease from a high of 32 points at the beginning of the year to 25 in this latest poll – its lowest figure to date.
Ukip gaffes and controversies
Ukip gaffes and controversies
1/18 European elections poster
Party's latest EU election posters branded 'racist' and compared to BNP campaigns
2/18 Farage 'car-crash' interview
Ukip spin doctor forced to intervene as Farage falters in disastrous radio interview
3/18 Neil Hamilton
Picture Exclusive: The year is 1998. The venue is a Springbok Club meeting. The flag is a symbol for white supremacists in South Africa. And the speaker is Ukip’s deputy chairman, Neil Hamilton
4/18 Kerry Smith
Kerry Smith resigned as would-be MP for South Basildon and East Thurrock after it emerged he had mocked gay party members as “disgusting poofters”, joked about shooting people from Chigwell in a “peasant hunt” and referred to someone with a Chinese name as a “Chinky bird”
5/18 Natasha Bolter
Former Ukip member Natasha Bolter was suspected of not having the teaching qualifications she professed to, only days after it was revealed that claims of her having attended Oxford University were also false
6/18 Ukip Calypso song
Mike Reid released a single in praise of UKIP trying to control the UK's borders, only to withdraw the single after being accused of racism for singing in a Jamaican accent
7/18 Janice Atkinson
Janice Atkinson, Ukip's South East chair, pictured by protesters while campaigning in Ashford, Kent with local party chair Norman Taylor
8/18 Ukip cancels Freephone
Ukip cancels Freephone number after protesters repeatedly called to push up costs
9/18 Farage 'car-crash' interview
Mr Farage appeared to be caught out on a number of issues, from Romanian neighbours to people speaking foreign languages on the train
10/18 Ukip employs illegal immigrants
Ukip criticised after European election candidate found employing illegal immigrants
11/18 Magnus Nielsen
Ukip candidate: 'Take away the right to vote to improve election turnout'
12/18 Poster model
A “British builder” portrayed in a Ukip poster accusing EU workers of taking UK jobs turns out to be an Irish actor - aka a migrant worker
13/18 'Arrest protesters'
Ukip called for police to arrest protesters ‘who call us fascists’ ahead of showdown with anti-fascist groups in Brighton
14/18 London Live make-up
Ukip's Nigel Farage reportedly refused to go on London Live 'without professional make up-artist'
15/18 Andre Lampitt
Ukip forced to suspend the "poster boy" of its European election broadcast, after it was revealed he had posted a series of vile racist comments on Twitter
Nigel Farage says he is taking taking legal advice over “outrageous” allegations that he is responsible for more than £50,000 of “missing” EU funding that was paid directly into his personal bank account
17/18 Have I Got News For You
Nigel Farage appears in Have I Got News For You, spends the entire episode being ridiculed over expenses and party 'fruitcakes'
18/18 Anti-gay comments
Local branch chairman for Ukip defends a party's councillor candidate Douglas Denny who called gay people “abnormal” and said he wished “they stop trying to ram it down my throat”, all while discussing whether the word “sodomite” should be used
The poll suggested that Ukip is benefiting from the lack of public trust in the main parties. Just 22 per cent of respondents said they trusted Westminster politicians, compared to 72 per cent who said they didn’t.
This was a trend that was reflected throughout Europe. In Germany 70 per cent said they didn’t trust mainstream politicians, while in Denmark the figure was 61 per cent, in Sweden it was 59 per cent and in Finland 57 per cent.
And in France over three-quarters (78 per cent) of respondents said they did not trust mainstream politicians.
On Monday Prime Minister David Cameron said he believed support for Ukip had been fuelled by the recession.
Appearing on ITV's Good Morning Britain, the Tory leader said the economic crisis made it “quite easy for someone to come along with some popular messages and some great rhetoric”.
But he said his was the only political party to be able to offer a referendum on Britain's membership of the European Union.
“The truth about British politics is you'll only get that with me as British prime minister,” he said.
“Labour and the Liberals won't give you a referendum, Ukip can't give you a referendum. I offer a clear plan: reform, renegotiation, referendum - all very much in Britain's interests.”
Additional reporting by Press Association