The Eurosceptic MP says her party's ambiguity towards Britain has alienated working class voters.
Since the crisis, coalitions of the right and populist right have become the norm - but under the British electoral system, Ukip are shut out.
White working-class boys do worse than anyone else at school.
Nigel Farage has turned on his opponents.
The Ukip civil war continues.
Tristram Hunt was elected by just 19 per cent of his constituents.
Keeping Farage's seat warm?
Now that Farage is standing down, who comes next?
Both Labour and the Tories can boast of moving the centre ground in their favour. But it is perhaps Ukip that has had the greatest influence.
Ukip is launching its manifesto today, but confusion remains over some of its policies.