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/in/districts/01.md

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+---
+type: Jurisdiction
+title: "IN-01"
+classification: congressional-district
+state: "IN"
+district: "IN-01"
+demographics:
+  population: 760512
+  population_under_18: 186719
+  population_18_64: 237718
+  population_65_plus: 336075
+  median_household_income: 75199
+  poverty_rate: 12.02
+  homeownership_rate: 73.31
+  unemployment_rate: 5.32
+  median_home_value: 263800
+  gini_index: 0.4558
+  vacancy_rate: 9.43
+  race_white: 480280
+  race_black: 136785
+  race_asian: 12053
+  hispanic: 137876
+  bachelors_plus: 154136
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-01
+
+Congressional district IN-01.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 760512 |
+| Under 18 | 186719 |
+| 18–64 | 237718 |
+| 65+ | 336075 |
+| Median household income | 75199 |
+| Poverty rate | 12.02 |
+| Homeownership rate | 73.31 |
+| Unemployment rate | 5.32 |
+| Median home value | 263800 |
+| Gini index | 0.4558 |
+| Vacancy rate | 9.43 |
+| White | 480280 |
+| Black | 136785 |
+| Asian | 12053 |
+| Hispanic/Latino | 137876 |
+| Bachelor's or higher | 154136 |
+
+## Source
+
+- demographics: Census ACS 2023

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

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+---
+type: Jurisdiction
+title: "IN-02"
+classification: congressional-district
+state: "IN"
+district: "IN-02"
+demographics:
+  population: 751821
+  population_under_18: 200266
+  population_18_64: 240161
+  population_65_plus: 311394
+  median_household_income: 66934
+  poverty_rate: 12.82
+  homeownership_rate: 73.09
+  unemployment_rate: 4.61
+  median_home_value: 216900
+  gini_index: 0.4252
+  vacancy_rate: 10.48
+  race_white: 581228
+  race_black: 48805
+  race_asian: 12607
+  hispanic: 93905
+  bachelors_plus: 127476
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-02
+
+Congressional district IN-02.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 751821 |
+| Under 18 | 200266 |
+| 18–64 | 240161 |
+| 65+ | 311394 |
+| Median household income | 66934 |
+| Poverty rate | 12.82 |
+| Homeownership rate | 73.09 |
+| Unemployment rate | 4.61 |
+| Median home value | 216900 |
+| Gini index | 0.4252 |
+| Vacancy rate | 10.48 |
+| White | 581228 |
+| Black | 48805 |
+| Asian | 12607 |
+| Hispanic/Latino | 93905 |
+| Bachelor's or higher | 127476 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-03"
+classification: congressional-district
+state: "IN"
+district: "IN-03"
+demographics:
+  population: 774688
+  population_under_18: 208964
+  population_18_64: 247662
+  population_65_plus: 318062
+  median_household_income: 71542
+  poverty_rate: 10.8
+  homeownership_rate: 75.09
+  unemployment_rate: 3.85
+  median_home_value: 229300
+  gini_index: 0.446
+  vacancy_rate: 9.21
+  race_white: 627068
+  race_black: 37772
+  race_asian: 23823
+  hispanic: 58719
+  bachelors_plus: 138696
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-03
+
+Congressional district IN-03.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 774688 |
+| Under 18 | 208964 |
+| 18–64 | 247662 |
+| 65+ | 318062 |
+| Median household income | 71542 |
+| Poverty rate | 10.8 |
+| Homeownership rate | 75.09 |
+| Unemployment rate | 3.85 |
+| Median home value | 229300 |
+| Gini index | 0.446 |
+| Vacancy rate | 9.21 |
+| White | 627068 |
+| Black | 37772 |
+| Asian | 23823 |
+| Hispanic/Latino | 58719 |
+| Bachelor's or higher | 138696 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-04"
+classification: congressional-district
+state: "IN"
+district: "IN-04"
+demographics:
+  population: 789018
+  population_under_18: 203930
+  population_18_64: 265758
+  population_65_plus: 319330
+  median_household_income: 78399
+  poverty_rate: 10.83
+  homeownership_rate: 71.34
+  unemployment_rate: 3.49
+  median_home_value: 279000
+  gini_index: 0.4398
+  vacancy_rate: 4.98
+  race_white: 634747
+  race_black: 45451
+  race_asian: 25370
+  hispanic: 63280
+  bachelors_plus: 166145
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-04
+
+Congressional district IN-04.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 789018 |
+| Under 18 | 203930 |
+| 18–64 | 265758 |
+| 65+ | 319330 |
+| Median household income | 78399 |
+| Poverty rate | 10.83 |
+| Homeownership rate | 71.34 |
+| Unemployment rate | 3.49 |
+| Median home value | 279000 |
+| Gini index | 0.4398 |
+| Vacancy rate | 4.98 |
+| White | 634747 |
+| Black | 45451 |
+| Asian | 25370 |
+| Hispanic/Latino | 63280 |
+| Bachelor's or higher | 166145 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-05"
+classification: congressional-district
+state: "IN"
+district: "IN-05"
+demographics:
+  population: 791265
+  population_under_18: 198369
+  population_18_64: 258241
+  population_65_plus: 334655
+  median_household_income: 80542
+  poverty_rate: 10.81
+  homeownership_rate: 72.78
+  unemployment_rate: 4.11
+  median_home_value: 289500
+  gini_index: 0.4703
+  vacancy_rate: 7.92
+  race_white: 640747
+  race_black: 43461
+  race_asian: 31088
+  hispanic: 43066
+  bachelors_plus: 222128
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-05
+
+Congressional district IN-05.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 791265 |
+| Under 18 | 198369 |
+| 18–64 | 258241 |
+| 65+ | 334655 |
+| Median household income | 80542 |
+| Poverty rate | 10.81 |
+| Homeownership rate | 72.78 |
+| Unemployment rate | 4.11 |
+| Median home value | 289500 |
+| Gini index | 0.4703 |
+| Vacancy rate | 7.92 |
+| White | 640747 |
+| Black | 43461 |
+| Asian | 31088 |
+| Hispanic/Latino | 43066 |
+| Bachelor's or higher | 222128 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-06"
+classification: congressional-district
+state: "IN"
+district: "IN-06"
+demographics:
+  population: 777157
+  population_under_18: 200909
+  population_18_64: 257145
+  population_65_plus: 319103
+  median_household_income: 77374
+  poverty_rate: 10.7
+  homeownership_rate: 70.06
+  unemployment_rate: 3.08
+  median_home_value: 250900
+  gini_index: 0.4274
+  vacancy_rate: 7.12
+  race_white: 613933
+  race_black: 43477
+  race_asian: 41303
+  hispanic: 49788
+  bachelors_plus: 161824
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-06
+
+Congressional district IN-06.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 777157 |
+| Under 18 | 200909 |
+| 18–64 | 257145 |
+| 65+ | 319103 |
+| Median household income | 77374 |
+| Poverty rate | 10.7 |
+| Homeownership rate | 70.06 |
+| Unemployment rate | 3.08 |
+| Median home value | 250900 |
+| Gini index | 0.4274 |
+| Vacancy rate | 7.12 |
+| White | 613933 |
+| Black | 43477 |
+| Asian | 41303 |
+| Hispanic/Latino | 49788 |
+| Bachelor's or higher | 161824 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-07"
+classification: congressional-district
+state: "IN"
+district: "IN-07"
+demographics:
+  population: 757121
+  population_under_18: 201900
+  population_18_64: 286784
+  population_65_plus: 268437
+  median_household_income: 64843
+  poverty_rate: 17.11
+  homeownership_rate: 54.6
+  unemployment_rate: 5.02
+  median_home_value: 237500
+  gini_index: 0.4689
+  vacancy_rate: 8.66
+  race_white: 350390
+  race_black: 233665
+  race_asian: 19697
+  hispanic: 119725
+  bachelors_plus: 185371
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-07
+
+Congressional district IN-07.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 757121 |
+| Under 18 | 201900 |
+| 18–64 | 286784 |
+| 65+ | 268437 |
+| Median household income | 64843 |
+| Poverty rate | 17.11 |
+| Homeownership rate | 54.6 |
+| Unemployment rate | 5.02 |
+| Median home value | 237500 |
+| Gini index | 0.4689 |
+| Vacancy rate | 8.66 |
+| White | 350390 |
+| Black | 233665 |
+| Asian | 19697 |
+| Hispanic/Latino | 119725 |
+| Bachelor's or higher | 185371 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-08"
+classification: congressional-district
+state: "IN"
+district: "IN-08"
+demographics:
+  population: 758402
+  population_under_18: 185772
+  population_18_64: 240590
+  population_65_plus: 332040
+  median_household_income: 65297
+  poverty_rate: 12.34
+  homeownership_rate: 74.03
+  unemployment_rate: 4.06
+  median_home_value: 198800
+  gini_index: 0.4573
+  vacancy_rate: 8.72
+  race_white: 668400
+  race_black: 24377
+  race_asian: 8241
+  hispanic: 24908
+  bachelors_plus: 130064
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-08
+
+Congressional district IN-08.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 758402 |
+| Under 18 | 185772 |
+| 18–64 | 240590 |
+| 65+ | 332040 |
+| Median household income | 65297 |
+| Poverty rate | 12.34 |
+| Homeownership rate | 74.03 |
+| Unemployment rate | 4.06 |
+| Median home value | 198800 |
+| Gini index | 0.4573 |
+| Vacancy rate | 8.72 |
+| White | 668400 |
+| Black | 24377 |
+| Asian | 8241 |
+| Hispanic/Latino | 24908 |
+| Bachelor's or higher | 130064 |
+
+## Source
+
+- demographics: Census ACS 2023

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

@@ -0,0 +1,59 @@
+---
+type: Jurisdiction
+title: "IN-09"
+classification: congressional-district
+state: "IN"
+district: "IN-09"
+demographics:
+  population: 764291
+  population_under_18: 183711
+  population_18_64: 252882
+  population_65_plus: 327698
+  median_household_income: 70510
+  poverty_rate: 12.78
+  homeownership_rate: 72.95
+  unemployment_rate: 3.42
+  median_home_value: 246100
+  gini_index: 0.4531
+  vacancy_rate: 7.96
+  race_white: 666529
+  race_black: 17676
+  race_asian: 13387
+  hispanic: 35349
+  bachelors_plus: 150587
+sources:
+  - field: demographics
+    source: Census ACS 2023
+confidence: official
+tags: [jurisdiction, congressional-district, in]
+timestamp: "2026-07-03"
+---
+
+# IN-09
+
+Congressional district IN-09.
+
+## Demographics (ACS 2023)
+
+| Measure | Value |
+| --- | --- |
+| Population | 764291 |
+| Under 18 | 183711 |
+| 18–64 | 252882 |
+| 65+ | 327698 |
+| Median household income | 70510 |
+| Poverty rate | 12.78 |
+| Homeownership rate | 72.95 |
+| Unemployment rate | 3.42 |
+| Median home value | 246100 |
+| Gini index | 0.4531 |
+| Vacancy rate | 7.96 |
+| White | 666529 |
+| Black | 17676 |
+| Asian | 13387 |
+| Hispanic/Latino | 35349 |
+| Bachelor's or higher | 150587 |
+
+## Source
+
+- demographics: Census ACS 2023