Labour have ticked up, but the more obvious shift in Ashcroft's poll has been a 2-point Tory-to-Ukip swing.
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As with Ukip, the Green party has the potential to cause some electoral headaches for the traditional parties.
The left must lead rather than follow.
The Labour leader's vow to end the exploitation of agency workers contrasts with Cameron's inertia.
Following Lord Razzall's revelation that he was approached by businessmen offering money for peerages, it's time to stop rewarding political donors through the honours list.
As we hit the two-year mark of the introduction of Police and Crime Commissioners, it’s time to look forward and assess what needs to be done to improve democratic governance in policing.
A London entrepreneur has entered the race to succeed Boris, suggesting the Tories could try to defeat Labour with a "celebrity" candidate.
There is less scope in the years ahead for our current levels of borrowing to be eliminated by further economic growth.
This immigration debate is based on prejudice and emotion.
Why it's time to stop the light-touch approach to private rented sector regulation.
The chair of Ed Miliband's General Election Strategy on the "profound transition" he sees happening in our politics.
A former Tory cabinet secretary is set to call for Britain to leave the EU, putting pressure on the Prime Minister who is preparing his renegotiation.
A confident stance on the economy will offer people hope to combat Farage's despair.
A stronger and fairer system is the right response to both the positives and negatives immigration can bring.
Braving the damp weather, Occupy protesters have occupied a square in front of the Supreme Court, calling for a movement for representative and participative democracy.
MPs are debating repealing parts of the government's NHS reforms, but Labour needs to give a detailed analysis as well as a campaigning spirit.
While some welcomed her effective sacking as ruthless leadership, others have denounced it as panicked and disloyal.
Voters who feel betrayed by the modern world do not want tinkering at the edges of the status quo.
As Mark Reckless celebrates his victory, will there be further defections from the Conservative benches?
The party won just 0.9 per cent of the vote. But it remains confident that it can win where it is incumbent.
By having one of its shadow cabinet resign on the night of the vote, Labour snatched defeat from the jaws of victory.
Mark Reckless becomes the second ever elected Ukip MP.
Emily Thornberry's resignation cements divisions in the Labour party already highlighted by this by-election battle.
The shadow attorney general has resigned after tweeting a photo of a house in Strood displaying three England flags.
With attention on the Rochester by-election, the Chancellor makes his retreat.
Although there is concern about immigration among some ethnic minority residents, many fear a Ukip win would be bad news for the area.
A new poll shows 26 per cent would vote for a Green candidate capable of winning, compared to 24 per cent for Ukip.
Tories will frame the by-election as a Labour failure, the press thinks Ed Miliband's written it off, and local party activists have their own problems to contend with.