The document discusses how differences in political party structures between Britain and America have influenced the development of online electoral campaigning. It outlines characteristics of British and American parties, with British parties having formal membership and internal democratic structures, while American parties have no formal membership and weak central organization. It argues that the candidate-focused model of internal democracy used by American parties, manifested through primaries, has allowed the internet to facilitate information transfer between participants, making online campaigning more successful in the US.