Add elections + demographics layer: candidates and jurisdictions

Two new entity types, built deterministically from the raw exports:

  Candidate (2,494)     — 2026 federal candidates as files under
                          us/states/<st>/candidates/, with office,
                          district, party, incumbent/challenger stance,
                          campaign committee, FEC id.

  Jurisdiction (3,494)  — demographic nodes carrying ACS 2023 data:
                          3,131 counties (deduped from 3,231 mixed-format
                          fips keys) + 363 congressional districts.

This completes the county skeleton nationwide: every US county is now a
browsable node with population, income, poverty, race, education and
housing — even where no officeholders are mapped yet. In Florida the
county index.md merges into the existing dir and reports its officeholder
count alongside demographics (St. Lucie: 33 officeholders + ACS profile).

build.py now reads seven raw inputs in one deterministic pass
(byte-identical on rerun). The mirror now answers: who holds power, who
runs this institution, who is running, and what each place is made of.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

data/jurisdictions/us/states/or/districts/01.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-01"
+classification: congressional-district
+state: "OR"
+district: "OR-01"
+demographics:
+  population: 716626
+  population_under_18: 143796
+  population_18_64: 273262
+  population_65_plus: 299568
+  median_household_income: 97201
+  poverty_rate: 10.55
+  homeownership_rate: 57.18
+  unemployment_rate: 4.57
+  median_home_value: 603600
+  gini_index: 0.4517
+  vacancy_rate: 10.04
+  race_white: 473000
+  race_black: 16472
+  race_asian: 79887
+  hispanic: 116583
+  bachelors_plus: 260845
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-01
+
+Congressional district OR-01.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 716626 |
+| Under 18 | 143796 |
+| 18–64 | 273262 |
+| 65+ | 299568 |
+| Median household income | 97201 |
+| Poverty rate | 10.55 |
+| Homeownership rate | 57.18 |
+| Unemployment rate | 4.57 |
+| Median home value | 603600 |
+| Gini index | 0.4517 |
+| Vacancy rate | 10.04 |
+| White | 473000 |
+| Black | 16472 |
+| Asian | 79887 |
+| Hispanic/Latino | 116583 |
+| Bachelor's or higher | 260845 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/or/districts/02.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-02"
+classification: congressional-district
+state: "OR"
+district: "OR-02"
+demographics:
+  population: 704768
+  population_under_18: 161805
+  population_18_64: 206912
+  population_65_plus: 336051
+  median_household_income: 68267
+  poverty_rate: 12.93
+  homeownership_rate: 69.12
+  unemployment_rate: 4.95
+  median_home_value: 385600
+  gini_index: 0.4526
+  vacancy_rate: 9.75
+  race_white: 550225
+  race_black: 3893
+  race_asian: 7205
+  hispanic: 114037
+  bachelors_plus: 135910
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-02
+
+Congressional district OR-02.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 704768 |
+| Under 18 | 161805 |
+| 18–64 | 206912 |
+| 65+ | 336051 |
+| Median household income | 68267 |
+| Poverty rate | 12.93 |
+| Homeownership rate | 69.12 |
+| Unemployment rate | 4.95 |
+| Median home value | 385600 |
+| Gini index | 0.4526 |
+| Vacancy rate | 9.75 |
+| White | 550225 |
+| Black | 3893 |
+| Asian | 7205 |
+| Hispanic/Latino | 114037 |
+| Bachelor's or higher | 135910 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/or/districts/03.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-03"
+classification: congressional-district
+state: "OR"
+district: "OR-03"
+demographics:
+  population: 700007
+  population_under_18: 150720
+  population_18_64: 265561
+  population_65_plus: 283726
+  median_household_income: 94110
+  poverty_rate: 11.91
+  homeownership_rate: 59.36
+  unemployment_rate: 5.32
+  median_home_value: 552500
+  gini_index: 0.4454
+  vacancy_rate: 5.41
+  race_white: 452842
+  race_black: 37951
+  race_asian: 58180
+  hispanic: 112034
+  bachelors_plus: 215279
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-03
+
+Congressional district OR-03.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 700007 |
+| Under 18 | 150720 |
+| 18–64 | 265561 |
+| 65+ | 283726 |
+| Median household income | 94110 |
+| Poverty rate | 11.91 |
+| Homeownership rate | 59.36 |
+| Unemployment rate | 5.32 |
+| Median home value | 552500 |
+| Gini index | 0.4454 |
+| Vacancy rate | 5.41 |
+| White | 452842 |
+| Black | 37951 |
+| Asian | 58180 |
+| Hispanic/Latino | 112034 |
+| Bachelor's or higher | 215279 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/or/districts/04.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-04"
+classification: congressional-district
+state: "OR"
+district: "OR-04"
+demographics:
+  population: 712690
+  population_under_18: 144128
+  population_18_64: 231184
+  population_65_plus: 337378
+  median_household_income: 69445
+  poverty_rate: 15.74
+  homeownership_rate: 64.15
+  unemployment_rate: 5.55
+  median_home_value: 438000
+  gini_index: 0.4653
+  vacancy_rate: 8.78
+  race_white: 578082
+  race_black: 7156
+  race_asian: 21083
+  hispanic: 71983
+  bachelors_plus: 168521
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-04
+
+Congressional district OR-04.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 712690 |
+| Under 18 | 144128 |
+| 18–64 | 231184 |
+| 65+ | 337378 |
+| Median household income | 69445 |
+| Poverty rate | 15.74 |
+| Homeownership rate | 64.15 |
+| Unemployment rate | 5.55 |
+| Median home value | 438000 |
+| Gini index | 0.4653 |
+| Vacancy rate | 8.78 |
+| White | 578082 |
+| Black | 7156 |
+| Asian | 21083 |
+| Hispanic/Latino | 71983 |
+| Bachelor's or higher | 168521 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/or/districts/05.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-05"
+classification: congressional-district
+state: "OR"
+district: "OR-05"
+demographics:
+  population: 717312
+  population_under_18: 158336
+  population_18_64: 230054
+  population_65_plus: 328922
+  median_household_income: 96200
+  poverty_rate: 9.28
+  homeownership_rate: 68.14
+  unemployment_rate: 4.23
+  median_home_value: 587400
+  gini_index: 0.4569
+  vacancy_rate: 9.01
+  race_white: 582816
+  race_black: 8116
+  race_asian: 21725
+  hispanic: 76663
+  bachelors_plus: 210008
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-05
+
+Congressional district OR-05.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 717312 |
+| Under 18 | 158336 |
+| 18–64 | 230054 |
+| 65+ | 328922 |
+| Median household income | 96200 |
+| Poverty rate | 9.28 |
+| Homeownership rate | 68.14 |
+| Unemployment rate | 4.23 |
+| Median home value | 587400 |
+| Gini index | 0.4569 |
+| Vacancy rate | 9.01 |
+| White | 582816 |
+| Black | 8116 |
+| Asian | 21725 |
+| Hispanic/Latino | 76663 |
+| Bachelor's or higher | 210008 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/or/districts/06.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "OR-06"
+classification: congressional-district
+state: "OR"
+district: "OR-06"
+demographics:
+  population: 720968
+  population_under_18: 168911
+  population_18_64: 255207
+  population_65_plus: 296850
+  median_household_income: 90927
+  poverty_rate: 10.42
+  homeownership_rate: 60.86
+  unemployment_rate: 4.56
+  median_home_value: 497100
+  gini_index: 0.4243
+  vacancy_rate: 4.61
+  race_white: 502563
+  race_black: 9188
+  race_asian: 23148
+  hispanic: 171440
+  bachelors_plus: 176882
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, or]
+timestamp: "2026-07-03"
+---
+
+# OR-06
+
+Congressional district OR-06.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 720968 |
+| Under 18 | 168911 |
+| 18–64 | 255207 |
+| 65+ | 296850 |
+| Median household income | 90927 |
+| Poverty rate | 10.42 |
+| Homeownership rate | 60.86 |
+| Unemployment rate | 4.56 |
+| Median home value | 497100 |
+| Gini index | 0.4243 |
+| Vacancy rate | 4.61 |
+| White | 502563 |
+| Black | 9188 |
+| Asian | 23148 |
+| Hispanic/Latino | 171440 |
+| Bachelor's or higher | 176882 |
+
+## Source
+
+- demographics: Census ACS 2023