This article investigates the possibilities for re-examining the political motivations of eighteenth-century county electors in the light of their socio-economic status. It focuses upon the linkage of estate and electoral records for several townships in Yorkshire, with particular attention paid to the deeds registries of Yorkshire as a source for the political historian. Whilst the argument stresses the importance of developing a broader understanding of the voters' motivations, its key conclusion is that the more one knows about individual electors, the less con®dence one can have in generalizations based upon aggregate analyses of poll books.Historians of early modern English politics have tended to pay scant regard to the nature and background of the electorate. Many postgraduate theses and academic texts on the electoral system have focused upon blocks of electors or voters with little intention of ascertaining who those men actually were, or the context of their voting behaviour and the light that it sheds on the politics of the time. 1 This is particularly the case for the county electorate, about whom Phillips noted`it is less the sheer number of county voters which deters the electoral researcher than the quality of the information about them'. 2Phillips's argument can be developed in two ways. The ®rst approach is methodological and concerns the development of a process for con®dently linking or analysing poll books. There are relatively few nominal data