In the American Physical Society (APS) Newsletter Physics and Society for January 2020, I have this article p18-24:
"A Buddy-system of Physicists and Political Scientists"
The calculations and graphics in the article have been done in Mathematica. There is no reason now to extend on these, or provide notebooks, since I should include them more systematically in a book on multi-seat elections later this year. I can say that working in the environment of Mathematica has been very fruitful for this type of problem. See also the earlier book on single seat elections: