- It is very difficult to distinguish the different pie slices.
- Multiple line charts.
- You can get data from https://openaddresses.io/ and follow the instructions in this article: https://www.roguegeographer.com/create-your-own-maps-using-excel-3d-maps/.
- It is possible to do it and get a result, but the accuracy will be bad. The result of an election depends mostly on external factors that are not taken into account by the data, and not so much on the historical results of past elections.
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