taffboy gwyrdd
Embrace the confusion!
It's quite simple. Nationalist politics and its adherents may seem like knuckle dragging cave men to your average soul, but if they're knocking on doors and listening to the concerns of folk in white w/c communities - and are willing to address their needs - then the folk in those communities may be willing to support them as no other fucker appears to be listening. And you don't need to attain a PHD in Marxism to understand that.
In fact the amount of wards where the BNP are active is pretty miniscule as a %. Community activists who happen to be left wing are far more prevalent, though they often don't do it in the name of a party.