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Fabio 1beeaab2db Graph: national county↔district↔legislator authority layer

The first edges in the repo. Every US county now links to the districts it
sits in, weighted by area overlap, and every legislator links to the district
they represent — county → district → representative, traversable.

Data (PostGIS, no Atlas dependency — computed directly from geometry):
- data/county_district_edges.jsonl — 16,328 weighted edges. area_weight =
  ST_Area(ST_Intersection(county, district))/ST_Area(county) over ST_MakeValid
  Census TIGER 2024 geometries, overlaps <0.5% dropped. Uses area-intersection,
  NOT centroid-in-polygon, so urban districts that carve through counties
  (e.g. GA CD-5 / Atlanta across Clayton+DeKalb+Fulton) are captured, not
  silently dropped. Per-county weights sum to ~1.0 per district type.

build.py:
- ~6,896 new district nodes: 435 CD (ACS demographics where available; sparse
  for the 8 states missing from acs_cd) + 4,927 state-house + 1,897 state-senate
  (geometry-only). GEOID/number-keyed, stable.
- county index.md gains a `districts:` block (frontmatter) + a ## Districts
  section (body links, so link-integrity checks them).
- legislators + US House members gain `represents:` pointing at their district
  node; edge stored once on the person, inverse left to the view.
- schemas/jurisdiction: classification enum + chamber/districts fields.

Honest gaps (logged, not hidden): ID + NH have no state-house geometry, so
their house districts get nodes (represents resolves) but no county edges;
CD nodes for acs_cd-missing states are demographically sparse.

Deterministic (byte-identical rebuild); validate.py passes 26,617 records,
link-integrity clean (every district/represents link resolves).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-04 22:28:08 -04:00

4.1 KiB

Raw Blame History

type, title, classification, fips, state, demographics, districts, sources, confidence, tags, timestamp

type

title

classification

fips

state

demographics

districts

sources

confidence

tags

timestamp

Jurisdiction

Pima County, AZ

county

04019

population	population_under_18	population_18_64	population_65_plus	median_household_income	poverty_rate	homeownership_rate	unemployment_rate	median_home_value	gini_index	vacancy_rate	race_white	race_black	race_asian	race_native	hispanic	bachelors_plus
1060490	207722	623776	228992	70315	14.32	65.24	5.5	319700	0.468	8.77	627672	38431	32648	30810	386110	385688

to	rel	area_weight
us/states/az/districts/07	in-district	0.806

to	rel	area_weight
us/states/az/districts/06	in-district	0.1939

to	rel	area_weight
us/states/az/districts/senate/23	in-district	0.6301

to	rel	area_weight
us/states/az/districts/senate/21	in-district	0.1145

to	rel	area_weight
us/states/az/districts/senate/17	in-district	0.1144

to	rel	area_weight
us/states/az/districts/senate/19	in-district	0.0679

to	rel	area_weight
us/states/az/districts/senate/16	in-district	0.0532

to	rel	area_weight
us/states/az/districts/senate/18	in-district	0.0104

to	rel	area_weight
us/states/az/districts/senate/20	in-district	0.0094

to	rel	area_weight
us/states/az/districts/house/23	in-district	0.6301

to	rel	area_weight
us/states/az/districts/house/21	in-district	0.1145

to	rel	area_weight
us/states/az/districts/house/17	in-district	0.1144

to	rel	area_weight
us/states/az/districts/house/19	in-district	0.0679

to	rel	area_weight
us/states/az/districts/house/16	in-district	0.0532

to	rel	area_weight
us/states/az/districts/house/18	in-district	0.0104

to	rel	area_weight
us/states/az/districts/house/20	in-district	0.0094

field	source
demographics	Census ACS 2023

field	source
districts	PostGIS area-intersection over Census TIGER 2024 boundaries

official

jurisdiction

county

2026-07-03

Pima County, AZ

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	1060490
Under 18	207722
18–64	623776
65+	228992
Median household income	70315
Poverty rate	14.32
Homeownership rate	65.24
Unemployment rate	5.5
Median home value	319700
Gini index	0.468
Vacancy rate	8.77
White	627672
Black	38431
Asian	32648
Native	30810
Hispanic/Latino	386110
Bachelor's or higher	385688

Districts

AZ-07 — 81% (congressional)
AZ-06 — 19% (congressional)
AZ Senate District 23 — 63% (state senate)
AZ Senate District 21 — 11% (state senate)
AZ Senate District 17 — 11% (state senate)
AZ Senate District 19 — 7% (state senate)
AZ Senate District 16 — 5% (state senate)
AZ Senate District 18 — 1% (state senate)
AZ Senate District 20 — 1% (state senate)
AZ House District 23 — 63% (state house)
AZ House District 21 — 11% (state house)
AZ House District 17 — 11% (state house)
AZ House District 19 — 7% (state house)
AZ House District 16 — 5% (state house)
AZ House District 18 — 1% (state house)
AZ House District 20 — 1% (state house)

Source

demographics: Census ACS 2023
districts: PostGIS area-intersection over Census TIGER 2024 boundaries

4.1 KiB Raw Blame History Unescape Escape

Pima County, AZ

Demographics (ACS 2023)

Districts

Source

4.1 KiB

Raw Blame History