Measuring partisan gerrymandering to pave the way for #FairMaps

United States
Joined May 2017
Two notably well-balanced US Congressional district plans have entered the chat. North Carolina’s court-ordered 13 seats with an efficiency gap of just 1.4%: planscore.campaignlegal.org/… Pennsylvania’s 17 seats with a tiny 1.8% EG: planscore.campaignlegal.org/…
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Ohio will redraw its district plans after @lwvohio and @aclu with @cwarshaw's help used @PlanScore to demonstrate the partisan unfairness of the state’s recent state legislative maps. You can see the analysis using @planscore here: aclu.org/legal-document/comp…
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Nick updates us on Virginia’s new House of Delegates map after a federal court requires portions of the state be redrawn: “The improvement is dramatic … especially impressive since it was racial—not partisan—gerrymandering that was being remedied” electionlawblog.org/?p=10359…
Pennsylvania’s just emerged from a contentious debate over new Congressional plans. How will the new district plan work out for voters? We scored all the proposed maps. medium.com/planscore/scoring…
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Why were Texas Republicans so keen to re-redistrict the state’s congressional plan in 2004? What happened after a court replaced Georgia’s 2002 state house plan with a map of its own creation? Check out Nick’s tour of our historical data for answers: electionlawblog.org/?p=97711
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PlanScore presents the most comprehensive historical dataset of partisan gerrymandering ever assembled, and we’re just getting started. planscore.org
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A guided tour of packing & cracking in Pennsylvania from @enactdev: medium.com/@enactdev/packing… Includes the wee blue precinct that completes PA-7.
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Dustin G. Mixon demonstrates how nice looking districts optimized with compactness measures can be designed with any arbitrary amount of partisan asymmetry: “If we optimize for Republicans, they can win all 8 districts … Democrats can get as many as 7.” dustingmixon.wordpress.com/2…
Reading Enhancing Democracy Through Legislative Redistricting by Gelman & King, the sweet summer children of September 1994. Contrast with ballotpedia.org/Alabama_Hous…
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It took a +9 Democratic vote share last night to come within reach of a 50/50 state house under Virginia's Republican partisan gerrymander.
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