Redistricting every state

[muon2]

How about this? NH-2 is basically the Boston NECTA+the Manchester NECTA+some towns that aren't in any NECTA to boost population

You've chopped the Portsmouth NECTA. I'm going to open a separate NECTA thread to post thoughts about applying NECTAs to the New England states.

[Sol]

Here's the revised NH:

[muon2]

Here's Maryland:



DC Area:


Baltimore:


I'm a little unsure about the Baltimore area.

What's the minority representation look like?

[Sol]

MD-4 is 59.8% black by VAP. MD-2 is 55,8% black by VAP. So black VAP rises for MD-4 but falls for MD-2. If that's a problem, I could do something like this, which raises BVAP to 62.2%.

However, it decreases competitiveness in MD-7.

[muon2]

MD-4 is 59.8% black by VAP. MD-2 is 55,8% black by VAP. So black VAP rises for MD-4 but falls for MD-2. If that's a problem, I could do something like this, which raises BVAP to 62.2%.

However, it decreases competitiveness in MD-7.

I actually went the other way with my map this summer. There are two majority black CDs: CD 5 at 54.9% and CD 7 at 53.1% BVAP. Then CD 4 is plurality black at 41.2% BVAP providing an additional opportunity. It gets the plan down to 5 chops and a microchop. It has 5 D, 2 R, and 1 even (CD 3).

[Sol]

I'd think I'd rather have the 6th go into Montgomery instead of Carroll, as it increases competitiveness- Maryland is very inelastic.

Otherwise though, your map is pretty and makes a lot of sense, although I like mine a wee bit better

[Sol]

TN.

[Sol]

Here's a lovely little Necro, with Virginia.




VA-1: 50.7% Obama, 46.2% D. LEAN R
VA-2: 55.6% Obama, 51.4% D LEAN D
VA-3: 53.2% Obama, 49.5% D TOSSUP
VA-4: 69.8% Obama, 63.9% D. 50.6 black VAP. SAFE D
VA-5: 46.8% Obama, 45% D. LIKELY R
VA-6: 42.1% Obama, 40.4% D. SAFE R
VA-7: 43.6% Obama, 40.2% D. SAFE R
VA-9: 40% Obama, 43.3% D. SAFE R






VA-8: 68.4% Obama, 64.6% D. SAFE D
VA-10: 50.4% Obama, 45% D. LEAN R
VA-11: 58.7% Obama, 53.8% D. LIKELY D.

It's pretty amazing how Virginia's geography screws the Democrats. In an average year, there'd  probably be a 4-6-1 split, with VA-3 going to either party. Of course, by the end of the decade, VA-1 and VA-10 will probably be Lean D, so it evens out.

[Sol]

Arkansas!



AR-1: 37.1% Obama, 49.2% D. LIKELY R
AR-2:  44.1% Obama, 54.1% D. LEAN R
AR-3: 34.2% Obama, 37.3% D. SAFE R
AR-4: 39.2% Obama, 51.2% D. LIKELY R

I freely admit that I don't know that much about Arkansas, so if anyone has quibbles, either with my partisan rankings or my district shapes, let me know!

[muon2]

Arkansas!



AR-1: 37.1% Obama, 49.2% D. LIKELY R
AR-2:  44.1% Obama, 54.1% D. LEAN R
AR-3: 34.2% Obama, 37.3% D. SAFE R
AR-4: 39.2% Obama, 51.2% D. LIKELY R

I freely admit that I don't know that much about Arkansas, so if anyone has quibbles, either with my partisan rankings or my district shapes, let me know!

UCCs are whole, and so close to whole counties, but ...

This was my whole county attempt a while ago. The maximum deviation is 169 persons.

[Sol]

That looks good!

[JerryArkansas]

I'm sorry, but that Arkansas looks ugly.  What I would do and the deviation would be higher is keep the second the same as it is now, make the third compact and move the first into the old third and fourth, and the fourth into the first's former territory.  I would post map, but I can make any maps at all right now.  I don't even have paint.

[Sol]

I'm sorry, but that Arkansas looks ugly.  What I would do and the deviation would be higher is keep the second the same as it is now, make the third compact and move the first into the old third and fourth, and the fourth into the first's former territory.  I would post map, but I can make any maps at all right now.  I don't even have paint.

Mine, or Muon's?

[JerryArkansas]

I'm sorry, but that Arkansas looks ugly.  What I would do and the deviation would be higher is keep the second the same as it is now, make the third compact and move the first into the old third and fourth, and the fourth into the first's former territory.  I would post map, but I can make any maps at all right now.  I don't even have paint.

Mine, or Muon's?

Mainly Muon's, but yous somewhat also. 

[muon2]

I'm sorry, but that Arkansas looks ugly.  What I would do and the deviation would be higher is keep the second the same as it is now, make the third compact and move the first into the old third and fourth, and the fourth into the first's former territory.  I would post map, but I can make any maps at all right now.  I don't even have paint.

Mine, or Muon's?

Mainly Muon's, but yous somewhat also. 

I suspect that I could make a less erose map with somewhat larger deviations as you suggest. When I did this I was primarily minimizing deviation so that I could put an upper limit on erosity. As you can see I didn't hew to the traditional groupings and I was willing to split Ft Smith from Fayetteville.

In terms of partisan balance, though all four CDs were for McCain, CD 1 and 2 voted Dem in the statewide elections used on DRA. That gives me the sense that are potentially competitive. I don't use that info to draw the map, but it is a good check after a map is drawn to see that there isn't some crazy bias in one plan compared to another.

[JerryArkansas]

I'm sorry, but that Arkansas looks ugly.  What I would do and the deviation would be higher is keep the second the same as it is now, make the third compact and move the first into the old third and fourth, and the fourth into the first's former territory.  I would post map, but I can make any maps at all right now.  I don't even have paint.

Mine, or Muon's?

Mainly Muon's, but yous somewhat also. 

I suspect that I could make a less erose map with somewhat larger deviations as you suggest. When I did this I was primarily minimizing deviation so that I could put an upper limit on erosity. As you can see I didn't hew to the traditional groupings and I was willing to split Ft Smith from Fayetteville.

In terms of partisan balance, though all four CDs were for McCain, CD 1 and 2 voted Dem in the statewide elections used on DRA. That gives me the sense that are potentially competitive. I don't use that info to draw the map, but it is a good check after a map is drawn to see that there isn't some crazy bias in one plan compared to another.

Your maps are good, but, knowing the state, it would never fly.  Map makers in the state should not split up Fort Smith and the other large cities in the Northwestern part of state.  When I do arkansas, I try and make two districts where the population lives in rural commenities, and two urban districts.

[Sol]

OK.

One that seems like a good idea, if you want to do a 1st district based in the Delta, is to send CD-2 to the North and East, and to avoid the West like the plague outside of the Little Rock UCC.

[muon2]

So here's my attempt to please Jerry while maintaining whole counties and not splitting UCCs. In both of these plans I've kept Ft Smith together with Fayetteville.

Here's plan A. It has an erosity of 33 and an average deviation of 1515 which is an inequality score of 16.



Here's plan B. It has an erosity of 35 and an average deviation of 786 which is a score of 15. It trades off some erosity to reduce inequality compared to plan B.



For comparison this was my minimum deviation plan which has an erosity of 38, but an average deviation of 153 which is a score of 12.



There are lots of variations for AR.

[JerryArkansas]

Plan B of the two is the better of the two.  It is pleasing to the eye, and wouldn't cause to much of an uproar here in Arkansas.

[Sol]

[Oldiesfreak1854]

Awesome!  How do you do this?

[Sol]

Dave's Redistricting App.

(It can significantly slow down your computer, particular for larger states).

[Sol]

While I'm working on a big Texas map, I figured I'd do some small states.

Kansas:



KS-1: 30.1% Obama. SAFE R.
KS-2: 45.9% Obama. LIKELY R
KS-4: 39.6% Obama. SAFE R



KS-3: 48.9% Obama. LEAN R

[muon2]

What are you population deviations for KS? KS is a case where either one must chop a county or a UCC. Should the chops be equivalent?

[Sol]

Here they are:

KS-1= -770
KS-2= 4
KS-3= 355
KS-4= 412

I could probably lower those deviations with some fiddling, or if I was willing to split townships. Also, UCCs are more important than counties for this, IMO.

EDIT: Yup, got it down to 25 for KS-1, and -383 for KS-4.