Korean national election study 1992

The sample for the survey was drawn on the basis of the ´multistage probability sample method´. At the first stage, the total sample size of 1200 were drawn with probability proportionate to electorate of the cities and communities. At the second stage, electoral constituencies within which 30 eligible voters would be drawn were selected. Eleven constituencies were selected in Seoul, four in Pusan, two in Inchon, and one in Kwangju, and so on. Within each constituency drawn two polling districts were allocated at the third stage, and finally a systematic random sample of 15 individuals were drawn within each polling district with probability proportionate to electorate.