I understand his point of view, but put another way that delta measures the extent to which the parties do not have to be responsive to local issues, which @Ag with kids puts in quotes, but has never responded to, going back literally two full decades.
My position is really simple: gerrymandering on the basis of party is incompatible with representative democracy and corrosive to the Republic.
And that is BECAUSE local issues often transcend party when districts are designed around communities of interest.
But when he does that he’s begging the question (ie, that it should), because, again, local issues and candidates often transcend party when districts are designed around communities of interest.
The only hypothesis I’ve been able to come with for why he thinks that (because he won’t explain why it “should” be that way) is that he genuinely believes that parties represent some kind of school of thought or ideology, which is of course suckerbait.