Voters Will Forgive UKIP.

The reason why so many voters will vote centre right but not conservative is the perception that tories are all wealthy, public school toffs - an impression which Mrs Thatcher did much to rectify - but which has clearly been restored by 'Dave' and his cronies.
Voters can put up with Mr Farage as an old Etonian as they recognise that such souls are 'rare birds' indeed, in Ukip.