>and it will be at play until we change the laws to have a party-proportional House; it is caused by an abstract mathematical theorem For the uninitiated, read

>and it will be at play until we change the laws to have a party-proportional House; it is caused by an abstract mathematical theorem For the uninitiated, read about Duverger's law[1]. Not sure if this is the "theorem" you're referring to, but this happens to be one of the few things that stuck with me from my mandatory political science courses. [1]: https://en.wikipedia.org/wiki/Duverger%27s_law https://en.wikipedia.org/wiki/Duverger%27s_law