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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

Missoula County, MT

county

30063

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
120672	21937	78052	20683	75598	10.13	58.81	3.74	472100	0.4723	7.47	104875	518	1920	2472	6096	54955

to	rel	area_weight
us/states/mt/districts/01	in-district	0.9997

to	rel	area_weight
us/states/mt/districts/senate/46	in-district	0.5226

to	rel	area_weight
us/states/mt/districts/senate/45	in-district	0.2776

to	rel	area_weight
us/states/mt/districts/senate/47	in-district	0.1179

to	rel	area_weight
us/states/mt/districts/senate/50	in-district	0.0378

to	rel	area_weight
us/states/mt/districts/senate/48	in-district	0.0228

to	rel	area_weight
us/states/mt/districts/senate/38	in-district	0.0126

to	rel	area_weight
us/states/mt/districts/senate/49	in-district	0.0086

to	rel	area_weight
us/states/mt/districts/house/92	in-district	0.4233

to	rel	area_weight
us/states/mt/districts/house/90	in-district	0.2677

to	rel	area_weight
us/states/mt/districts/house/93	in-district	0.1151

to	rel	area_weight
us/states/mt/districts/house/91	in-district	0.0993

to	rel	area_weight
us/states/mt/districts/house/99	in-district	0.0369

to	rel	area_weight
us/states/mt/districts/house/96	in-district	0.022

to	rel	area_weight
us/states/mt/districts/house/76	in-district	0.0126

to	rel	area_weight
us/states/mt/districts/house/89	in-district	0.0099

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Missoula County, MT

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	120672
Under 18	21937
18–64	78052
65+	20683
Median household income	75598
Poverty rate	10.13
Homeownership rate	58.81
Unemployment rate	3.74
Median home value	472100
Gini index	0.4723
Vacancy rate	7.47
White	104875
Black	518
Asian	1920
Native	2472
Hispanic/Latino	6096
Bachelor's or higher	54955

Districts

MT-01 — 100% (congressional)
MT Senate District 46 — 52% (state senate)
MT Senate District 45 — 28% (state senate)
MT Senate District 47 — 12% (state senate)
MT Senate District 50 — 4% (state senate)
MT Senate District 48 — 2% (state senate)
MT Senate District 38 — 1% (state senate)
MT Senate District 49 — 1% (state senate)
MT House District 92 — 42% (state house)
MT House District 90 — 27% (state house)
MT House District 93 — 12% (state house)
MT House District 91 — 10% (state house)
MT House District 99 — 4% (state house)
MT House District 96 — 2% (state house)
MT House District 76 — 1% (state house)
MT House District 89 — 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

Missoula County, MT

Demographics (ACS 2023)

Districts

Source

4.1 KiB

Raw Blame History