Folium is a Python library that allows you to create interactive maps in HTML. It is based on Leaflet, an open source JavaScript library, and relies on the features of the Python language to make data manipulation and the creation of complex visualizations easier. In use, Folium proves to be a library that is easy to learn and use. In addition, it offers a wide range of features for creating geographic data visualizations.

The results of the French legislative elections are given by constituency, but what is the distribution of votes by municipality? A geographical visualization in the form of a choropleth map makes it possible to study it.