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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

3.7 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

Somerset County, ME

county

23025

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
50959	9389	29847	11723	58179	14.19	77.42	3.5	166900	0.4465	22.99	48140	249	192	108	787	10290

to	rel	area_weight
us/states/me/districts/02	in-district	0.9993

to	rel	area_weight
us/states/me/districts/senate/5	in-district	0.9096

to	rel	area_weight
us/states/me/districts/senate/3	in-district	0.077

to	rel	area_weight
us/states/me/districts/senate/16	in-district	0.0131

to	rel	area_weight
us/states/me/districts/house/72	in-district	0.5975

to	rel	area_weight
us/states/me/districts/house/73	in-district	0.2351

to	rel	area_weight
us/states/me/districts/house/69	in-district	0.0469

to	rel	area_weight
us/states/me/districts/house/71	in-district	0.0355

to	rel	area_weight
us/states/me/districts/house/66	in-district	0.0203

to	rel	area_weight
us/states/me/districts/house/70	in-district	0.0146

to	rel	area_weight
us/states/me/districts/house/30	in-district	0.0145

to	rel	area_weight
us/states/me/districts/house/67	in-district	0.0131

to	rel	area_weight
us/states/me/districts/house/68	in-district	0.0117

to	rel	area_weight
us/states/me/districts/house/74	in-district	0.0107

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Somerset County, ME

County jurisdiction.

Demographics (ACS 2023)

Measure	Value
Population	50959
Under 18	9389
18–64	29847
65+	11723
Median household income	58179
Poverty rate	14.19
Homeownership rate	77.42
Unemployment rate	3.5
Median home value	166900
Gini index	0.4465
Vacancy rate	22.99
White	48140
Black	249
Asian	192
Native	108
Hispanic/Latino	787
Bachelor's or higher	10290

Districts

ME-02 — 100% (congressional)
ME Senate District 5 — 91% (state senate)
ME Senate District 3 — 8% (state senate)
ME Senate District 16 — 1% (state senate)
ME House District 72 — 60% (state house)
ME House District 73 — 24% (state house)
ME House District 69 — 5% (state house)
ME House District 71 — 4% (state house)
ME House District 66 — 2% (state house)
ME House District 70 — 1% (state house)
ME House District 30 — 1% (state house)
ME House District 67 — 1% (state house)
ME House District 68 — 1% (state house)
ME House District 74 — 1% (state house)

Source

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

3.7 KiB Raw Blame History Unescape Escape

Somerset County, ME

Demographics (ACS 2023)

Districts

Source

3.7 KiB

Raw Blame History