I think this indirectly hints at something much more fundamental: district based plurality does not make sense as an election system anymore. I think an eye opening example is to consider a hypothetical single state with 10 representatives. This state has a population, perfectly well distributed, of 35% democrat, 30% republican, 20% libertarian, and 15% green. And we draw our districts up with absolutely no bias what…
Because the seats going to the smaller parties would come at the expense of the parties currently in power, who are thus strongly disincentivized against changing the rules towards proportionality.