Comparing the mean-median test for our hypothetical nonpartisan congressional maps with the districts used in 2016, we estimate that gerrymandering explains roughly 4/5ths of the GOP's partisan advantage nationwide. Geography bias just isn't that important except in some states pic.twitter.com/67WkwNjh32

— Stephen Wolf @stephenwolf.bsky.social (@PoliticsWolf) August 13, 2018