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/al/districts/01.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-01"
+classification: congressional-district
+state: "AL"
+district: "AL-01"
+demographics:
+  population: 760389
+  population_under_18: 185408
+  population_18_64: 225626
+  population_65_plus: 349355
+  median_household_income: 71253
+  poverty_rate: 13.9
+  homeownership_rate: 75.71
+  unemployment_rate: 4.25
+  median_home_value: 255700
+  gini_index: 0.4595
+  vacancy_rate: 17.71
+  race_white: 558591
+  race_black: 121768
+  race_asian: 12946
+  hispanic: 41701
+  bachelors_plus: 147964
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-01
+
+Congressional district AL-01.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 760389 |
+| Under 18 | 185408 |
+| 18–64 | 225626 |
+| 65+ | 349355 |
+| Median household income | 71253 |
+| Poverty rate | 13.9 |
+| Homeownership rate | 75.71 |
+| Unemployment rate | 4.25 |
+| Median home value | 255700 |
+| Gini index | 0.4595 |
+| Vacancy rate | 17.71 |
+| White | 558591 |
+| Black | 121768 |
+| Asian | 12946 |
+| Hispanic/Latino | 41701 |
+| Bachelor's or higher | 147964 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "AL-02"
+classification: congressional-district
+state: "AL"
+district: "AL-02"
+demographics:
+  population: 703362
+  population_under_18: 180711
+  population_18_64: 226992
+  population_65_plus: 295659
+  median_household_income: 54977
+  poverty_rate: 20.24
+  homeownership_rate: 64.17
+  unemployment_rate: 4.94
+  median_home_value: 175100
+  gini_index: 0.5008
+  vacancy_rate: 16.4
+  race_white: 288085
+  race_black: 350050
+  race_asian: 15539
+  hispanic: 28822
+  bachelors_plus: 130574
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-02
+
+Congressional district AL-02.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 703362 |
+| Under 18 | 180711 |
+| 18–64 | 226992 |
+| 65+ | 295659 |
+| Median household income | 54977 |
+| Poverty rate | 20.24 |
+| Homeownership rate | 64.17 |
+| Unemployment rate | 4.94 |
+| Median home value | 175100 |
+| Gini index | 0.5008 |
+| Vacancy rate | 16.4 |
+| White | 288085 |
+| Black | 350050 |
+| Asian | 15539 |
+| Hispanic/Latino | 28822 |
+| Bachelor's or higher | 130574 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-03"
+classification: congressional-district
+state: "AL"
+district: "AL-03"
+demographics:
+  population: 737665
+  population_under_18: 179835
+  population_18_64: 236390
+  population_65_plus: 321440
+  median_household_income: 62191
+  poverty_rate: 16.71
+  homeownership_rate: 73.09
+  unemployment_rate: 4.44
+  median_home_value: 207800
+  gini_index: 0.4568
+  vacancy_rate: 15.47
+  race_white: 523914
+  race_black: 140546
+  race_asian: 12104
+  hispanic: 32660
+  bachelors_plus: 126407
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-03
+
+Congressional district AL-03.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 737665 |
+| Under 18 | 179835 |
+| 18–64 | 236390 |
+| 65+ | 321440 |
+| Median household income | 62191 |
+| Poverty rate | 16.71 |
+| Homeownership rate | 73.09 |
+| Unemployment rate | 4.44 |
+| Median home value | 207800 |
+| Gini index | 0.4568 |
+| Vacancy rate | 15.47 |
+| White | 523914 |
+| Black | 140546 |
+| Asian | 12104 |
+| Hispanic/Latino | 32660 |
+| Bachelor's or higher | 126407 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-04"
+classification: congressional-district
+state: "AL"
+district: "AL-04"
+demographics:
+  population: 735310
+  population_under_18: 185215
+  population_18_64: 222455
+  population_65_plus: 327640
+  median_household_income: 63203
+  poverty_rate: 15.6
+  homeownership_rate: 76.47
+  unemployment_rate: 3.84
+  median_home_value: 205600
+  gini_index: 0.4646
+  vacancy_rate: 12.46
+  race_white: 599418
+  race_black: 48619
+  race_asian: 4876
+  hispanic: 64886
+  bachelors_plus: 115123
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-04
+
+Congressional district AL-04.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 735310 |
+| Under 18 | 185215 |
+| 18–64 | 222455 |
+| 65+ | 327640 |
+| Median household income | 63203 |
+| Poverty rate | 15.6 |
+| Homeownership rate | 76.47 |
+| Unemployment rate | 3.84 |
+| Median home value | 205600 |
+| Gini index | 0.4646 |
+| Vacancy rate | 12.46 |
+| White | 599418 |
+| Black | 48619 |
+| Asian | 4876 |
+| Hispanic/Latino | 64886 |
+| Bachelor's or higher | 115123 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-05"
+classification: congressional-district
+state: "AL"
+district: "AL-05"
+demographics:
+  population: 773877
+  population_under_18: 187265
+  population_18_64: 256901
+  population_65_plus: 329711
+  median_household_income: 80140
+  poverty_rate: 11.94
+  homeownership_rate: 70.7
+  unemployment_rate: 3.37
+  median_home_value: 294500
+  gini_index: 0.4586
+  vacancy_rate: 8.42
+  race_white: 529417
+  race_black: 138533
+  race_asian: 13531
+  hispanic: 57739
+  bachelors_plus: 197382
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-05
+
+Congressional district AL-05.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 773877 |
+| Under 18 | 187265 |
+| 18–64 | 256901 |
+| 65+ | 329711 |
+| Median household income | 80140 |
+| Poverty rate | 11.94 |
+| Homeownership rate | 70.7 |
+| Unemployment rate | 3.37 |
+| Median home value | 294500 |
+| Gini index | 0.4586 |
+| Vacancy rate | 8.42 |
+| White | 529417 |
+| Black | 138533 |
+| Asian | 13531 |
+| Hispanic/Latino | 57739 |
+| Bachelor's or higher | 197382 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-06"
+classification: congressional-district
+state: "AL"
+district: "AL-06"
+demographics:
+  population: 728184
+  population_under_18: 186118
+  population_18_64: 234013
+  population_65_plus: 308053
+  median_household_income: 86712
+  poverty_rate: 9.28
+  homeownership_rate: 75.87
+  unemployment_rate: 3.07
+  median_home_value: 297800
+  gini_index: 0.4636
+  vacancy_rate: 7.14
+  race_white: 523571
+  race_black: 134283
+  race_asian: 11736
+  hispanic: 41804
+  bachelors_plus: 204288
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-06
+
+Congressional district AL-06.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 728184 |
+| Under 18 | 186118 |
+| 18–64 | 234013 |
+| 65+ | 308053 |
+| Median household income | 86712 |
+| Poverty rate | 9.28 |
+| Homeownership rate | 75.87 |
+| Unemployment rate | 3.07 |
+| Median home value | 297800 |
+| Gini index | 0.4636 |
+| Vacancy rate | 7.14 |
+| White | 523571 |
+| Black | 134283 |
+| Asian | 11736 |
+| Hispanic/Latino | 41804 |
+| Bachelor's or higher | 204288 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/al/districts/07.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AL-07"
+classification: congressional-district
+state: "AL"
+district: "AL-07"
+demographics:
+  population: 718912
+  population_under_18: 181394
+  population_18_64: 243047
+  population_65_plus: 294471
+  median_household_income: 54635
+  poverty_rate: 19.34
+  homeownership_rate: 60.81
+  unemployment_rate: 6.0
+  median_home_value: 183200
+  gini_index: 0.4769
+  vacancy_rate: 15.92
+  race_white: 278533
+  race_black: 368308
+  race_asian: 8857
+  hispanic: 39354
+  bachelors_plus: 135097
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, al]
+timestamp: "2026-07-03"
+---
+
+# AL-07
+
+Congressional district AL-07.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 718912 |
+| Under 18 | 181394 |
+| 18–64 | 243047 |
+| 65+ | 294471 |
+| Median household income | 54635 |
+| Poverty rate | 19.34 |
+| Homeownership rate | 60.81 |
+| Unemployment rate | 6.0 |
+| Median home value | 183200 |
+| Gini index | 0.4769 |
+| Vacancy rate | 15.92 |
+| White | 278533 |
+| Black | 368308 |
+| Asian | 8857 |
+| Hispanic/Latino | 39354 |
+| Bachelor's or higher | 135097 |
+
+## Source
+
+- demographics: Census ACS 2023