I have written many times that gerrymandering is a cancer on our body politic. Originally developed by Democrats, Republicans have now become addicted to it. It is good for nobody, least of all the voters.
An excellent tongue-in-check explanation of it can be found here:
https://www.youtube.com/watch?v=A-4dIImaodQ
If you are offended by profanity and off-color humor, you should NOT watch it.