opinion of using 'shortest splitline' algorithm for districting (user search)
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  opinion of using 'shortest splitline' algorithm for districting (search mode)
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Author Topic: opinion of using 'shortest splitline' algorithm for districting  (Read 4849 times)
Vazdul (Formerly Chairman of the Communist Party of Ontario)
Vazdul
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« on: March 16, 2012, 05:47:12 PM »

I am opposed to the use of any algorithm for redistricting, simply because they have a terrible tendency to tear apart communities that, by any objective measure, should certainly be in the same district. Urban areas tend to get hit particularly hard. Just look at the top page on the RangeVoting link. That's three districts in Birmingham and whopping five in Indianapolis. Then dig a little deeper:

Arizona: Seven districts in Maricopa County, and Tucson is split right down the middle.

California: Sacramento split in four, Bakersfield in three, and Fresno in two, and that's just what's immediately noticable. I don't even want to know what's going on in LA.

Florida: Jacksonville and Orlando split right down the middle.

Georgia: Macon and Augusta split right down the middle, and Atlanta looks to carved four ways.

Iowa: Des Moines split in three and Cedar Rapids in two.

Illinois: Surprisingly not too bad outside of Chicago, but Moline-Rock Island and Decatur get screwed.

Kansas: Wichita, Lawrence, and the Kansas City suburbs each get split.

Louisiana: New Orleans and the northern (developed) part of Jefferson Parish get split.

Maryland: Is that a five-way split of Baltimore? And four districts bordering DC.

Michigan: Flint split in three and Grand Rapids in two.

Minnesota: Six districts in the metro, and it looks like the cities themselves are split between four districts.

Missouri: Kansas City (I mean the real, urban part of the city, not the suburbs within city limits) is split right down the middle. St. Louis is also split in two.

Mississippi: Jackson and Columbus split in two. Meridian split in three.

North Carolina: Four districts in Raleigh, Greensboro split right down the middle, and Fayetteville also split.

Nebraska: The Omaha area is split so that the district containing the majority of the area has to take in a bunch of rural territory.

New Hampshire: Manchester split right down the middle.

New Jersey: It's hard to tell because the picture is quite small, but it looks like Paterson is split in four. Newark is definitely split, and it looks like so is Atlantic City.

New Mexico: All three districts contain part of Albuquerque.

New York: What a mess! Three districts in Buffalo. Three districts in Syracuse. Rochester split down the middle. Albany split down the middle. Utica split right down the middle. The earmuffs look sane in comparison.

Ohio: Three districts in Columbus, and the Cincinnati-Dayton district is just horrible.

Oklahoma: Three districts in Oklahoma City, and Tulsa split right down the middle.

Oregon: Three districts in Portland, and Eugene split in two.

Pennsylvania: Ugh! I think that's a four-way split of Philadelphia and a three-way split of Pittsburgh. Lancaster is split right down the middle, as is Allentown. Really now, the lines may look prettier, but how does this make any more sense than the current gerrymander?

South Carolina: Three-way split of Columbia.

Tennessee: Nashville is split right down the middle.

Texas: Apart from doing god knows what to the metro areas, the map splits Austin three ways, as well as splitting Lubbock, Midland, Corpus Christi, McAllen, Laredo, Longview, and Tyler.

Virginia: A three-way split of the Richmond area, probably including Richmond proper. Charlottesville split right down the middle. And a district stretching from Newport News to Alexandria.

Washington: I believe that's a four-way split of Tacoma.

Wisconsin: Milwaukee split right down the middle.
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Vazdul (Formerly Chairman of the Communist Party of Ontario)
Vazdul
YaBB God
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Posts: 4,295
United States


« Reply #1 on: March 16, 2012, 05:59:43 PM »

This is more a matter of the particular algorithm that is used.  If stated as a goal of minimizing total bath length of internal boundaries, the districts would be compact.

The Shortest Splitline Algorithm is very precisely defined and can result in only one map.

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This proves the VRA is logically unsound.
[/quote]

No, what it proves is that using an algorithm to redistrict tears apart racial communities.
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