Note that the use of the ensemble to evaluate maps with four or fewer districts risks obscuring the influence that a single district change in either Partisan Fairness or Competitiveness can make to overall letter grades. (1/5)
And, more importantly, this matters to how residents who live in these states will experience these maps. Letter grades, in the cases of extremely low-district states, should be considered secondarily to other metrics provided. (2/5)
It is important, in these instances, for mapmakers to consider other criteria, such as Communities of Interest, Minority Composition, and state-specific criteria, in both line drawing and evaluation. (3/5)
In Utah, specifically, there should be special consideration to Salt Lake City and Salt Lake County, due to its unique Communities of Interest and the relative density of partisans that differ from much of the rest of the state. (4/5)
Thus, a map that splits Salt Lake County more than necessary should be carefully examined for fairness to the residents of the region. (5/5)

#PGP_UT #UTPol #Redistricting #FairMaps

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More from @princetongerry

6 Nov
We have grades out for the Ohio Democratic Second Draft Congressional Proposal.

It gets an A overall and in Partisan Fairness, with Cs in Competitiveness and Geography.

It would elect a 9R-6D delegation from OH to Congress.

gerrymander.princeton.edu/redistricting-…
It has three competitive seats that all lean R (OH-7 (Medina and Ashland), 10 (Dayton) and 14 (Youngstown)), but in certain years, could elect a Democrat.
It has one district with a BVAP over 40% (OH-11, Cleveland). OH-3 (Columbus) has an MVAP over 40%.
Read 5 tweets
6 Nov
We have grades out for the Utah legislature's proposed maps. These maps are going to a public hearing on Monday, so folks in Utah should speak up about what they like and don't like in these maps.

#PGP_UT #UTPol #Redistricting #FairMaps Image
First up is the Congressional map. It gets an A overall and in Partisan Fairness, with Cs in Competitiveness and Geography.

It would elect 0 Democrats and has no competitive seats, largely because it splits Salt Lake City across all four districts.

gerrymander.princeton.edu/redistricting-… ImageImage
It's important to emphasize that our ensemble is less useful in states with four or fewer districts - it's really important that folks look at other factors, including Communities of Interest, like those gathered by @Representable_ here: representable.org/map/ut/ Image
Read 6 tweets
5 Nov
Georgia has released a new State Senate draft plan and we've got a Report Card out.

It gets an F overall and in Partisan Fairness and Competitiveness, with a C in Geography.

gerrymander.princeton.edu/redistricting-…
We'd expect it to elect 33 R and 23 D, with the current Senate split 34R-22D. It would have only 1 competitive seat.

It has 16 districts with a BVAP over 40% and 1 with an HVAP over 40.
This map gets the same grades as the prior map draft, would elect the same number of Senators from each party, has the same number of competitive seats, and has roughly similar minority composition numbers.

That earlier draft is here: gerrymander.princeton.edu/redistricting-…
Read 4 tweets
5 Nov
The Michigan Independent Redistricting Commission continues its work, having released several new draft maps for public comment. They will be voting on these maps on December 30, so we encourage Michiganders to speak up about what they like and don't like in these drafts.
Apple gets a B overall, with an A in Partisan Fairness, a C in competitiveness, and an F in Geography.

Birch and Chestnut get As overall and in Partisan Fairness, with Cs in Competitiveness and Geography.
Read 10 tweets
3 Nov
North Carolina's special session on redistricting continues and we've got report cards out for the latest iterations of the state house and state senate maps, as well as a reminder of our report cards for the Congressional map.

#FairMaps #Redistricting #NCPol #PGP_NC
First, the State House map, HSA-9, also known as HB 976.

It gets an F overall and in Partisan Fairness, a C in Competitiveness and a B in Geography.

It would elect 70R-50D and has 17 competitive seats.

gerrymander.princeton.edu/redistricting-…
It has 12 districts with a BVAP over 40%, 1 with an AVAP over 35%, and one with an NVAP over 40% (NC-47, around Lumberton).
Read 7 tweets
3 Nov
Ohio is starting its debate of new Congressional maps. Both the House and Senate Republicans released versions today (neither of which were provided in shapefiles) and while we're waiting on a conversion of the Senate version, we wanted to post our Report Card for the House.
It gets an F overall and in Partisan Fairness, and a C in Competitiveness and Geography.

It would elect 12R-3D delegation, though OH-1 (Cincinnati) is very close and could easily elect a Republican some years.

gerrymander.princeton.edu/redistricting-…
It splits 13 counties and has four competitive districts, three of which lean Republican.

It also only has 1 district with a BVAP over 40% (OH-11, Cleveland).
Read 8 tweets

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