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/az/districts/01.md

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+---
+type: Jurisdiction
+title: "AZ-01"
+classification: congressional-district
+state: "AZ"
+district: "AZ-01"
+demographics:
+  population: 819479
+  population_under_18: 154568
+  population_18_64: 268415
+  population_65_plus: 396496
+  median_household_income: 102195
+  poverty_rate: 7.76
+  homeownership_rate: 64.98
+  unemployment_rate: 3.19
+  median_home_value: 696200
+  gini_index: 0.5024
+  vacancy_rate: 10.32
+  race_white: 577813
+  race_black: 32273
+  race_asian: 37071
+  hispanic: 155503
+  bachelors_plus: 344227
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-01
+
+Congressional district AZ-01.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 819479 |
+| Under 18 | 154568 |
+| 18–64 | 268415 |
+| 65+ | 396496 |
+| Median household income | 102195 |
+| Poverty rate | 7.76 |
+| Homeownership rate | 64.98 |
+| Unemployment rate | 3.19 |
+| Median home value | 696200 |
+| Gini index | 0.5024 |
+| Vacancy rate | 10.32 |
+| White | 577813 |
+| Black | 32273 |
+| Asian | 37071 |
+| Hispanic/Latino | 155503 |
+| Bachelor's or higher | 344227 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "AZ-02"
+classification: congressional-district
+state: "AZ"
+district: "AZ-02"
+demographics:
+  population: 853923
+  population_under_18: 194046
+  population_18_64: 254419
+  population_65_plus: 405458
+  median_household_income: 70376
+  poverty_rate: 14.94
+  homeownership_rate: 75.84
+  unemployment_rate: 5.79
+  median_home_value: 367800
+  gini_index: 0.4623
+  vacancy_rate: 16.54
+  race_white: 495330
+  race_black: 18329
+  race_asian: 12263
+  hispanic: 168255
+  bachelors_plus: 165757
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-02
+
+Congressional district AZ-02.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 853923 |
+| Under 18 | 194046 |
+| 18–64 | 254419 |
+| 65+ | 405458 |
+| Median household income | 70376 |
+| Poverty rate | 14.94 |
+| Homeownership rate | 75.84 |
+| Unemployment rate | 5.79 |
+| Median home value | 367800 |
+| Gini index | 0.4623 |
+| Vacancy rate | 16.54 |
+| White | 495330 |
+| Black | 18329 |
+| Asian | 12263 |
+| Hispanic/Latino | 168255 |
+| Bachelor's or higher | 165757 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "AZ-03"
+classification: congressional-district
+state: "AZ"
+district: "AZ-03"
+demographics:
+  population: 834750
+  population_under_18: 244114
+  population_18_64: 341005
+  population_65_plus: 249631
+  median_household_income: 70539
+  poverty_rate: 17.38
+  homeownership_rate: 50.63
+  unemployment_rate: 5.59
+  median_home_value: 375800
+  gini_index: 0.4194
+  vacancy_rate: 7.15
+  race_white: 223486
+  race_black: 91481
+  race_asian: 25719
+  hispanic: 532785
+  bachelors_plus: 113037
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-03
+
+Congressional district AZ-03.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 834750 |
+| Under 18 | 244114 |
+| 18–64 | 341005 |
+| 65+ | 249631 |
+| Median household income | 70539 |
+| Poverty rate | 17.38 |
+| Homeownership rate | 50.63 |
+| Unemployment rate | 5.59 |
+| Median home value | 375800 |
+| Gini index | 0.4194 |
+| Vacancy rate | 7.15 |
+| White | 223486 |
+| Black | 91481 |
+| Asian | 25719 |
+| Hispanic/Latino | 532785 |
+| Bachelor's or higher | 113037 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "AZ-04"
+classification: congressional-district
+state: "AZ"
+district: "AZ-04"
+demographics:
+  population: 793264
+  population_under_18: 171375
+  population_18_64: 316215
+  population_65_plus: 305674
+  median_household_income: 82539
+  poverty_rate: 12.09
+  homeownership_rate: 55.6
+  unemployment_rate: 4.38
+  median_home_value: 449900
+  gini_index: 0.4412
+  vacancy_rate: 8.87
+  race_white: 470113
+  race_black: 37046
+  race_asian: 55026
+  hispanic: 206661
+  bachelors_plus: 228151
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-04
+
+Congressional district AZ-04.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 793264 |
+| Under 18 | 171375 |
+| 18–64 | 316215 |
+| 65+ | 305674 |
+| Median household income | 82539 |
+| Poverty rate | 12.09 |
+| Homeownership rate | 55.6 |
+| Unemployment rate | 4.38 |
+| Median home value | 449900 |
+| Gini index | 0.4412 |
+| Vacancy rate | 8.87 |
+| White | 470113 |
+| Black | 37046 |
+| Asian | 55026 |
+| Hispanic/Latino | 206661 |
+| Bachelor's or higher | 228151 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "AZ-05"
+classification: congressional-district
+state: "AZ"
+district: "AZ-05"
+demographics:
+  population: 902036
+  population_under_18: 249638
+  population_18_64: 292087
+  population_65_plus: 360311
+  median_household_income: 112116
+  poverty_rate: 6.7
+  homeownership_rate: 78.33
+  unemployment_rate: 3.67
+  median_home_value: 546900
+  gini_index: 0.4203
+  vacancy_rate: 8.64
+  race_white: 613418
+  race_black: 35555
+  race_asian: 52102
+  hispanic: 186183
+  bachelors_plus: 250763
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-05
+
+Congressional district AZ-05.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 902036 |
+| Under 18 | 249638 |
+| 18–64 | 292087 |
+| 65+ | 360311 |
+| Median household income | 112116 |
+| Poverty rate | 6.7 |
+| Homeownership rate | 78.33 |
+| Unemployment rate | 3.67 |
+| Median home value | 546900 |
+| Gini index | 0.4203 |
+| Vacancy rate | 8.64 |
+| White | 613418 |
+| Black | 35555 |
+| Asian | 52102 |
+| Hispanic/Latino | 186183 |
+| Bachelor's or higher | 250763 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AZ-06"
+classification: congressional-district
+state: "AZ"
+district: "AZ-06"
+demographics:
+  population: 833838
+  population_under_18: 171222
+  population_18_64: 253839
+  population_65_plus: 408777
+  median_household_income: 80251
+  poverty_rate: 10.43
+  homeownership_rate: 71.57
+  unemployment_rate: 3.72
+  median_home_value: 372800
+  gini_index: 0.4537
+  vacancy_rate: 8.45
+  race_white: 554054
+  race_black: 35487
+  race_asian: 26914
+  hispanic: 223135
+  bachelors_plus: 246335
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-06
+
+Congressional district AZ-06.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 833838 |
+| Under 18 | 171222 |
+| 18–64 | 253839 |
+| 65+ | 408777 |
+| Median household income | 80251 |
+| Poverty rate | 10.43 |
+| Homeownership rate | 71.57 |
+| Unemployment rate | 3.72 |
+| Median home value | 372800 |
+| Gini index | 0.4537 |
+| Vacancy rate | 8.45 |
+| White | 554054 |
+| Black | 35487 |
+| Asian | 26914 |
+| Hispanic/Latino | 223135 |
+| Bachelor's or higher | 246335 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AZ-07"
+classification: congressional-district
+state: "AZ"
+district: "AZ-07"
+demographics:
+  population: 813289
+  population_under_18: 210236
+  population_18_64: 301749
+  population_65_plus: 301304
+  median_household_income: 60932
+  poverty_rate: 17.18
+  homeownership_rate: 62.03
+  unemployment_rate: 5.43
+  median_home_value: 278000
+  gini_index: 0.4454
+  vacancy_rate: 8.02
+  race_white: 303912
+  race_black: 32666
+  race_asian: 20603
+  hispanic: 493716
+  bachelors_plus: 113714
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-07
+
+Congressional district AZ-07.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 813289 |
+| Under 18 | 210236 |
+| 18–64 | 301749 |
+| 65+ | 301304 |
+| Median household income | 60932 |
+| Poverty rate | 17.18 |
+| Homeownership rate | 62.03 |
+| Unemployment rate | 5.43 |
+| Median home value | 278000 |
+| Gini index | 0.4454 |
+| Vacancy rate | 8.02 |
+| White | 303912 |
+| Black | 32666 |
+| Asian | 20603 |
+| Hispanic/Latino | 493716 |
+| Bachelor's or higher | 113714 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/az/districts/08.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AZ-08"
+classification: congressional-district
+state: "AZ"
+district: "AZ-08"
+demographics:
+  population: 815902
+  population_under_18: 174153
+  population_18_64: 249711
+  population_65_plus: 392038
+  median_household_income: 85593
+  poverty_rate: 9.06
+  homeownership_rate: 70.46
+  unemployment_rate: 4.02
+  median_home_value: 449500
+  gini_index: 0.4531
+  vacancy_rate: 7.0
+  race_white: 548547
+  race_black: 29772
+  race_asian: 46905
+  hispanic: 184634
+  bachelors_plus: 214658
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-08
+
+Congressional district AZ-08.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 815902 |
+| Under 18 | 174153 |
+| 18–64 | 249711 |
+| 65+ | 392038 |
+| Median household income | 85593 |
+| Poverty rate | 9.06 |
+| Homeownership rate | 70.46 |
+| Unemployment rate | 4.02 |
+| Median home value | 449500 |
+| Gini index | 0.4531 |
+| Vacancy rate | 7.0 |
+| White | 548547 |
+| Black | 29772 |
+| Asian | 46905 |
+| Hispanic/Latino | 184634 |
+| Bachelor's or higher | 214658 |
+
+## Source
+
+- demographics: Census ACS 2023

data/jurisdictions/us/states/az/districts/09.md

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "AZ-09"
+classification: congressional-district
+state: "AZ"
+district: "AZ-09"
+demographics:
+  population: 915903
+  population_under_18: 223211
+  population_18_64: 271418
+  population_65_plus: 421274
+  median_household_income: 80463
+  poverty_rate: 10.4
+  homeownership_rate: 76.71
+  unemployment_rate: 5.55
+  median_home_value: 406800
+  gini_index: 0.4312
+  vacancy_rate: 9.92
+  race_white: 559000
+  race_black: 48259
+  race_asian: 26133
+  hispanic: 284789
+  bachelors_plus: 153770
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, az]
+timestamp: "2026-07-03"
+---
+
+# AZ-09
+
+Congressional district AZ-09.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 915903 |
+| Under 18 | 223211 |
+| 18–64 | 271418 |
+| 65+ | 421274 |
+| Median household income | 80463 |
+| Poverty rate | 10.4 |
+| Homeownership rate | 76.71 |
+| Unemployment rate | 5.55 |
+| Median home value | 406800 |
+| Gini index | 0.4312 |
+| Vacancy rate | 9.92 |
+| White | 559000 |
+| Black | 48259 |
+| Asian | 26133 |
+| Hispanic/Latino | 284789 |
+| Bachelor's or higher | 153770 |
+
+## Source
+
+- demographics: Census ACS 2023