Abstract
The availability of detailed census data at the level of parliamentary constituencies has promoted the testing of ecological models of voting behaviour in the United Kingdom. To date, most of the testing has used the 1966 Census data, which is inferior to that for 1971 in certain respects. As a result, it has not been possible to test in detail two models – that of ‘embourgeoisement’ and that of the ‘property-owning-democracy’. But the cross-classifications available at constituency level for the 1971 Census allow the relative importance of the two to be assessed.