Unclassed Choropleth Maps are maps that don't break the data up into classes, but rather just classify the data on a scale. These maps are useful when just a general overview of the data is needed. The map above is from the 2004 presidential election. This is a unclassed choropleth map because the key is a gradient and specific numbers don't have certain colors. The red shaded areas are areas that voted republican while the blue shaded areas are areas that voted democratic.
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