SALFORD, ENGLAND - MAY 16: A mock up of a pig in a trough, driven by British National Party campaigners, drives past the home of Labour minister Hazel Blears as BNP candidate Gary Tumulty canvasses for votes in the Irwell Riverside by-election on May 16, 2009 in Salford, England. Tumulty is hoping to gain votes in the by-election next Thursday from voters who have a disaffection with the main political parties. During his canvassing round, which started outside the offices of Hazel Blears and used a mock-up of pigs in a trough, party members also campaigned for the European and local council elections in June.