
https://snyder.substack.com/p/biden-experiments

https://www.supremecourt.gov/DocketPDF/21/21-1326/225832/20220519154806836_21-1326%20Amicus%20Brief.pdf

https://blogs.lse.ac.uk/europpblog/2021/10/28/what-explains-the-fragmentation-of-the-german-party-system/