The analysis of voting behavior patterns from electoral statistics aggregated by regions and urban and rural districts has a long and rich tradition (Lipset and Rokkan, 1967). This mode of electoral analysis has, however, declined in usage due to the emergence of the sample survey method, which allows for a more detailed analysis of individual voting choices and the related social and attitudinal factors which influence them.
It is often forgotten, however, that aggregate analysis of area or geographically defined voting statistics is a low-cost research method when compared to the exclusive and much more expensive sample survey research method. Aggregate analysis can be applied effectively with careful adaptation to most of the areas of electoral analysis, particularly so in societies in which community and residential patterns are structured according to clear socioeconomic and stratification variables such as income, status, and occupation. This applies as well to societies in which regional and cerritorial divisions are more than just administrative units but represent focal points of local identities and loyalties.