[EL] Query - Counties and Congressional Districts
Justin Levitt
levittj at lls.edu
Fri Aug 10 13:50:09 PDT 2012
Thanks for the plug, Michael.
I've now added block equivalency files to the PDFs, shapefiles, and
Google map files of the new districts -- congressional districts here
<http://redistricting.lls.edu/2010districts.php>, state legislative
districts here <http://redistricting.lls.edu/2010districtsstate.php>.
I've got almost all of the district shapefiles, but as Michael
suggested, only about half of the states appear to make block
equivalency files available in the same place as their other
redistricting data. I will, indeed, happily post other states' block
equivalency files if anyone wants to send them my way.
So far, all of the files posted are official (the only translation I've
done is in translating from an official ESRI shapefile format to a
Google map format, or from an official Google map format to an ESRI
shapefile). If official files aren't available for the remaining
states, I'll happily post others' translations from shapefiles to blocks
(and I'll flag them as derived).
In the absence of a 2010 census tabulation of stats for the new
districts, I'd also welcome (and gladly post) any analyses that people
want to run, including county allocations, raw population counts per
district, CVAP estimates, etc. (I've already linked to the very helpful
Daily Kos breakdown of '08 presidential results and constituent
redistribution in the new congressional districts.)
I'm talking to you, people with an oversupply of grad students and a
need for a project this coming semester...
Justin
On 8/10/2012 12:49 PM, Michael McDonald wrote:
> I thought I would give Justin Levitt a chance to answer this question. He's
> compiled many of states' congressional district boundary data and links to
> primary sources here:
>
> http://redistricting.lls.edu/2010districts.php
>
> For some cases, like Arizona, the block equivalency files may not be listed
> by Justin, but are available on the state website which he links to. In some
> other cases, work will be needed to convert a shapefile (or worse, an image)
> to a block equivalency file.
>
> Once one has the block equivalency files, one could easily use the county id
> embedded in the unique block id to generate a list of counties, and one can
> do the work of tabulating the 2010 census data that Kim suggests will not be
> forthcoming from the Census Bureau.
>
> Justin has posted most of the states, and if I were to speak for him, I
> believe that he would welcome anyone who may send him missing data to
> complete the valuable service he has provided.
>
> ============
> Dr. Michael P. McDonald
> Associate Professor, George Mason University
> Non-Resident Senior Fellow, Brookings Institution
>
> Mailing address:
> (o) 703-993-4191 George Mason University
> (f) 703-993-1399 Dept. of Public and International Affairs
> mmcdon at gmu.edu 4400 University Drive - 3F4
> http://elections.gmu.edu Fairfax, VA 22030-4444
>
> From: law-election-bounces at department-lists.uci.edu
> [mailto:law-election-bounces at department-lists.uci.edu] On Behalf Of Kim
> Sent: Friday, August 10, 2012 12:49 PM
> To: djohnson at ndcresearch.com; richardwinger at yahoo.com;
> lowenstein at law.ucla.edu; joehall at gmail.com
> Cc: law-election at department-lists.uci.edu
> Subject: Re: [EL] Query - Counties and Congressional Districts
>
> Doug is correct in noting that the link provided is to last decade's
> districts. He is also correct in noting what the Bureau reported to NCSL
> earlier this week, since we were at the same meeting.
>
> But he did not note a more disturbing piece of information that was shared
> with the group, that being that funding cut backs in the Bureau have caused
> them to cancel the retabulation of the 2010 census numbers for the new
> districts. When they get the district geography into their master system,
> they will be able to have new ACS data reported for the districts, but not
> old data. Whether these cutbacks affect other data products or tables
> remains to be seen.
>
> Who knows, maybe Lillie will turn out to be correct and we'll do this. Of
> course, that means I need to come off my constant state of traveling and
> find the tine (and $) to do the work.
> Kimball Brace
> Election Data Services, Inc.
> 6171 Emerywood Ct
> Manassas, VA 20112-3078
> (202) 789-2004 or (703) 580-7267
> Fax: 703-580-6258
> Cell: 202-607-5857
> KBrace at aol.com or KBrace at electiondataservices.com
> www.electiondataservices.com
>
> NOTE: WE'VE MOVED: Please update your records.
> ==============================================
>
> -----Original Message-----
> From: Douglas Johnson <djohnson at ndcresearch.com>
> To: richardwinger <richardwinger at yahoo.com>; 'DanielLowenstein'
> <lowenstein at law.ucla.edu>; 'Joseph Lorenzo Hall' <joehall at gmail.com>
> Cc: law-election <law-election at department-lists.uci.edu>
> Sent: Fri, Aug 10, 2012 11:14 am
> Subject: Re: [EL] Query - Counties and Congressional Districts
> That is correct: the current Census link provides 2000 Census data and
> 2001-cycle district lines.
>
> At NCSL earlier this week the Census Bureau reported that it has just
> completed collecting the 2011-cycle lines, and that it will use the new
> lines in its 2013 release of American Community Service data, which I
> believe is scheduled for January.
>
> - Doug
>
> Douglas Johnson
> Fellow
> Rose Institute of State and Local Government
> m 310-200-2058
> o 909-621-8159
> douglas.johnson at cmc.edu
>
>
>
>
>
> From: law-election-bounces at department-lists.uci.edu
> [mailto:law-election-bounces at department-lists.uci.edu] On Behalf Of Richard
> Winger
> Sent: Friday, August 10, 2012 6:27 AM
> To: DanielLowenstein; Joseph Lorenzo Hall
> Cc: law-election at department-lists.uci.edu
> Subject: Re: [EL] Query - Counties and Congressional Districts
>
> That link goes to the 2000 census. Is there also a link for 2010 census?
>
> Richard Winger
> 415-922-9779
> PO Box 470296, San Francisco Ca 94147
>
> --- On Fri, 8/10/12, Joseph Lorenzo Hall <joehall at gmail.com> wrote:
>
> From: Joseph Lorenzo Hall <joehall at gmail.com>
> Subject: Re: [EL] Query - Counties and Congressional Districts
> To: "Lowenstein, Daniel" <lowenstein at law.ucla.edu>
> Cc: "law-election at department-lists.uci.edu"
> <law-election at department-lists.uci.edu>
> Date: Friday, August 10, 2012, 3:59 AM
> The census is the place to send your friend, Dan:
>
> http://www.census.gov/geo/www/cd109th/tables109.html
>
> best wishes, Joe
>
> On Thursday, August 9, 2012, Lowenstein, Daniel wrote:
> A friend of mine is looking for a convenient data file showing for
> all 50 states which counties are located, in part or in whole, in each
> congressional district. If you can recommend such a source, please send the
> information to me off-list. I'll pass it on to my friend. I believe this
> is for research, not a political purpose. Thanks.
>
> Best,
>
> Daniel H. Lowenstein
> Director, Center for the Liberal Arts and Free Institutions
> (CLAFI)
> UCLA Law School
> 405 Hilgard
> Los Angeles, California 90095-1476
> 310-825-5148
>
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--
Justin Levitt
Associate Professor of Law
Loyola Law School | Los Angeles
919 Albany St.
Los Angeles, CA 90015
213-736-7417
justin.levitt at lls.edu
ssrn.com/author=698321
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