The Colours of The Electorate

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The standard electorate map tends to be the choropleth style. These maps will typically fill an entire constituency with the color of the winning party. Although this gives a definitive guide of seat winners, it fails to visualize any diversity of voting within the constituency and the number of ballots cast. The dot density approach has the benefit of representing votes for parties that did not win in each constituency. It also does not suffer from the tendency of over-emphasising the influence of large, yet sparsely populated areas, as color coverage, is dictated by voter count, not constituency area size.

Via cultureofinsight