GD _ I don't think you have anything to worry about. The small number of voters who actually put their cross next to BNP will get wiped out at a general election.
Purport - "have the often specious appearance of being, intending, or claiming"
That does accurately describe the approach of "New" Labour to freedom, justice and greater opportunities.
You are right not to be frightened of people like Tebbit and Benn - quality politicians with differing views. Genuine - where have they all gone?