Constituency (local) campaigning in British general elections has been transformed over the past ten years or so. Firstly, national party headquarters have taken an increasingly large role in planning and managing constituency campaigns. Although the pace of change has varied across the major parties, all are heading down the same road. Secondly, campaigning on the ground has also changed. Technological and other changes have led to a decline in the use of traditional campaign techniques and increased use of new methods, especially in `key' seats. These developments are charted using data derived from a unique set of nationwide surveys of election agents at the last three general elections. Finally, the article returns (briefly) to the debate about the electoral effects of constituency campaigning, presenting data relating to its impact in each of the three elections concerned.