Dave Wasserman @Redistrict
Personally, I've found @davesredist to be the most feature-rich: it has a wealth of election data for all 50 states and updated geographies with 2018 population estimates. In 2018, @FiveThirtyEight and I used it to create the Atlas of Redistricting. https://t.co/wXjtqxlFYi — PolitiTweet.org