Files
republic-os/data/jurisdictions/us/states/il/people/mark-walker.md
T
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

1.1 KiB

type, title, description, role, party, level, branch, state, district, represents, tenure, election, ids, sources, confidence, tags, timestamp
type title description role party level branch state district represents tenure election ids sources confidence tags timestamp
Person Mark Walker IL Senate District 27 — IL State Senate District 27 IL Senate District 27 D state legislative IL IL State Senate District 27 us/states/il/districts/senate/27
start current
2024-05-11 true
term_length term_limit
2 varies
person office tenure jurisdiction
c35db780-7bee-495a-a9d3-c8b23e84a32f a0574747-9f98-410e-a308-9a18a2ac4468 166672a5-1335-488b-b69a-110fd1eb490f 7a20d9a0-2457-4930-87f9-f38aff613936
field source
tenure OpenStates YAML via GitHub 2026-06-20
field source
jurisdiction SLDU (Census 2025)
official
officeholder
state
legislative
il
2026-07-04

Mark Walker

Current IL Senate District 27 (IL State Senate District 27).

Represents IL State Senate District 27.

Sources

  • tenure: OpenStates YAML via GitHub 2026-06-20
  • jurisdiction: SLDU (Census 2025)

Generated from the Atlas officeholders v3 export (2026-07-04).