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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

3.9 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

Madison County, MS

county

28089

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
111647	27113	67492	17042	83441	11.17	71.32	3.73	311100	0.4963	7.43	61103	41466	3347	83	4320	53158

to	rel	area_weight
us/states/ms/districts/02	in-district	0.703

to	rel	area_weight
us/states/ms/districts/03	in-district	0.297

to	rel	area_weight
us/states/ms/districts/senate/21	in-district	0.6005

to	rel	area_weight
us/states/ms/districts/senate/22	in-district	0.1897

to	rel	area_weight
us/states/ms/districts/senate/23	in-district	0.0874

to	rel	area_weight
us/states/ms/districts/senate/26	in-district	0.0665

to	rel	area_weight
us/states/ms/districts/senate/25	in-district	0.0558

to	rel	area_weight
us/states/ms/districts/house/27	in-district	0.3597

to	rel	area_weight
us/states/ms/districts/house/57	in-district	0.2914

to	rel	area_weight
us/states/ms/districts/house/75	in-district	0.1163

to	rel	area_weight
us/states/ms/districts/house/56	in-district	0.0991

to	rel	area_weight
us/states/ms/districts/house/73	in-district	0.0668

to	rel	area_weight
us/states/ms/districts/house/58	in-district	0.0515

to	rel	area_weight
us/states/ms/districts/house/72	in-district	0.0084

to	rel	area_weight
us/states/ms/districts/house/64	in-district	0.0064

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Madison County, MS

County jurisdiction — 3 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	111647
Under 18	27113
18–64	67492
65+	17042
Median household income	83441
Poverty rate	11.17
Homeownership rate	71.32
Unemployment rate	3.73
Median home value	311100
Gini index	0.4963
Vacancy rate	7.43
White	61103
Black	41466
Asian	3347
Native	83
Hispanic/Latino	4320
Bachelor's or higher	53158

Districts

MS-02 — 70% (congressional)
MS-03 — 30% (congressional)
MS Senate District 21 — 60% (state senate)
MS Senate District 22 — 19% (state senate)
MS Senate District 23 — 9% (state senate)
MS Senate District 26 — 7% (state senate)
MS Senate District 25 — 6% (state senate)
MS House District 27 — 36% (state house)
MS House District 57 — 29% (state house)
MS House District 75 — 12% (state house)
MS House District 56 — 10% (state house)
MS House District 73 — 7% (state house)
MS House District 58 — 5% (state house)
MS House District 72 — 1% (state house)
MS House District 64 — 1% (state house)

Source

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

3.9 KiB Raw Blame History Unescape Escape

Madison County, MS

Demographics (ACS 2023)

Districts

Source

3.9 KiB

Raw Blame History