{
  "alt": "Table of the steps that define the tract sample and the ZIP code area sample, listing for each step the units dropped, the units left, the votes in the dropped units and their Democratic share. The largest drop is the missing Social Capital Atlas values among ZIP code areas.",
  "caption": "The tract sample loses {fact:dropped_n} tracts with more than {fact:vote_floor} votes after the {fact:n_not_in_atlas} tracts with no atlas row, and the ZIP-only sample loses {fact:zip_sc_dropped_n} ZIP code areas for a missing Social Capital Atlas value. Each row counts the units removed at that step, in the order shown, with the units that remain, the millions of estimated votes in the removed units and the Democratic share of their two-party vote.",
  "data": [
    {
      "dem_dropped": null,
      "n_dropped": null,
      "n_left": 83648,
      "sample": "Tracts",
      "step": "In the 2020 vote layer",
      "votes_dropped": null
    },
    {
      "dem_dropped": 60.195,
      "n_dropped": 883,
      "n_left": 82765,
      "sample": "Tracts",
      "step": "No row in the atlas",
      "votes_dropped": 1.82386
    },
    {
      "dem_dropped": 60.0302,
      "n_dropped": 1148,
      "n_left": 81617,
      "sample": "Tracts",
      "step": "100 or fewer estimated votes",
      "votes_dropped": 0.00849949
    },
    {
      "dem_dropped": 93.4078,
      "n_dropped": 218,
      "n_left": 81399,
      "sample": "Tracts",
      "step": "Missing a race share, the college share or population density",
      "votes_dropped": 0.364882
    },
    {
      "dem_dropped": 60.5082,
      "n_dropped": 321,
      "n_left": 81078,
      "sample": "Tracts",
      "step": "Missing the Area Deprivation Index",
      "votes_dropped": 0.18043
    },
    {
      "dem_dropped": 59.0568,
      "n_dropped": 200,
      "n_left": 80878,
      "sample": "Tracts",
      "step": "Missing an Opportunity Atlas estimate",
      "votes_dropped": 0.282181
    },
    {
      "dem_dropped": 47.8375,
      "n_dropped": 5,
      "n_left": 80873,
      "sample": "Tracts",
      "step": "Missing an EJScreen indicator",
      "votes_dropped": 0.00704769
    },
    {
      "dem_dropped": null,
      "n_dropped": null,
      "n_left": 32462,
      "sample": "ZIP code areas",
      "step": "In the 2020 vote layer",
      "votes_dropped": null
    },
    {
      "dem_dropped": 21.6679,
      "n_dropped": 34,
      "n_left": 32428,
      "sample": "ZIP code areas",
      "step": "No row in the atlas",
      "votes_dropped": 0.00103948
    },
    {
      "dem_dropped": 29.9937,
      "n_dropped": 3008,
      "n_left": 29420,
      "sample": "ZIP code areas",
      "step": "100 or fewer estimated votes",
      "votes_dropped": 0.144726
    },
    {
      "dem_dropped": 54.7387,
      "n_dropped": 96,
      "n_left": 29324,
      "sample": "ZIP code areas",
      "step": "Missing a race share, the college share or population density",
      "votes_dropped": 0.0266991
    },
    {
      "dem_dropped": 40.7212,
      "n_dropped": 48,
      "n_left": 29276,
      "sample": "ZIP code areas",
      "step": "Missing the Area Deprivation Index",
      "votes_dropped": 0.0166263
    },
    {
      "dem_dropped": null,
      "n_dropped": null,
      "n_left": 29276,
      "sample": "ZIP code areas",
      "step": "Bridge sample: Area Deprivation Index and PLACES present",
      "votes_dropped": null
    },
    {
      "dem_dropped": 40.1013,
      "n_dropped": 11138,
      "n_left": 18138,
      "sample": "ZIP code areas",
      "step": "Missing a Social Capital Atlas value",
      "votes_dropped": 7.6571
    },
    {
      "dem_dropped": 53.8128,
      "n_dropped": 99,
      "n_left": 18039,
      "sample": "ZIP code areas",
      "step": "Missing an IRS value",
      "votes_dropped": 0.137784
    }
  ],
  "id": "sample_counts",
  "notes": [
    "Steps that drop no unit are left out: no tract and no ZIP code area lacks a PLACES value.",
    "Alaska and Hawaii are not in the vote layer. The tracts with no atlas row are all in Connecticut, which has votes in the vote layer but is coded by planning region in the atlas.",
    "The ZIP code atlas has Connecticut ZIP code areas, so the ZIP sample covers Connecticut."
  ],
  "source": "Precinct returns allocated to 2020 tracts and ZIP code tabulation areas (Fekrazad 2025) with the project atlases; 2020 presidential vote; counts of units and votes, unweighted sums",
  "spec": {
    "columns": [
      {
        "key": "sample",
        "label": "Sample"
      },
      {
        "key": "step",
        "label": "Step"
      },
      {
        "format": {
          "thousands": true
        },
        "key": "n_dropped",
        "label": "Units dropped"
      },
      {
        "format": {
          "thousands": true
        },
        "key": "n_left",
        "label": "Units left"
      },
      {
        "format": {
          "digits": 2
        },
        "key": "votes_dropped",
        "label": "Votes dropped (millions)"
      },
      {
        "format": {
          "digits": 0
        },
        "key": "dem_dropped",
        "label": "Democratic share of dropped votes (%)"
      }
    ]
  },
  "subtitle": "Units dropped at each step of the tract sample and the ZIP code area sample, with the votes they carry and their Democratic share of the two-party vote, 2020",
  "title": "The Social Capital Atlas drops ZIP code areas that voted {fact:zip_sc_dropped_dem} Democratic against {fact:zip_sample_dem} for those kept, and missing controls drop tracts in the District of Columbia",
  "type": "table",
  "width": "wide"
}