Four notable General Elections in the years 1900–10 helped to undermine faith in the great fixed stars by which Victorian statesmen had set their course. A great Liberal majority filled the House of Commons and was augmented by the representatives of organized labour; within the Conservative party the votaries of Tariff Reform imposed their new orthodoxy. We now know a good deal about the attitudes and actions of men at the heart of politics, and something about the electoral calculations upon which their hopes of achieving or maintaining power were based. But, as Dr Kitson Clark has reminded us, ′elections are won or lost in the constituencies, and in order to learn what happened in any given general election it has proved to be necessary to make a rather close local study of particular constituencies′.1 Modern scholarship has cast a clearer light upon the relations between Labour and the Liberals in these years, as upon the Unionist attitude towards Tariff Reform.2 One aim of this article is to seek to explore these two themes by reference to electoral developments in one English borough. The merits of a case study of Blackburn from this point of view will, I hope, become apparent. There is also a complementary objective. While the study of ‵court′ politics may become jejune unless the Blackburns are taken into consideration, it is equally true that a parochial account would leave much about Blackburn politics unexplained. It is necessary to explore the interactions between two political worlds, to compare great things with small.