A much-needed boost for UKIP after previous polls showing Farage trailing in the seat…

UPDATE: Andrew Cooper, boss at rival pollsters Populus and late of Downing Street, says Survation has screwed up the data:

The Survation poll in S.Thanet showing Farage ahead says nearly twice as many people voted UKIP there in 2010 as actually did #roguepoll

— Andrew Cooper (@AndrewCooper__) February 27, 2015

UPDATE II: Survation restate their position on past voting intention methodology – implicitly saying that it is in fact Andrew Cooper who doesn’t understand the data. Pointing out that 20% of a constituency churns between general elections.  We’ll find out which methodology works best on May 8…