{
  "alt": "Dumbbell chart with two rows, Democratic and Republican voters, joining the 2008 share of the party's voters in the highest income bracket to the 2024 share, with confidence intervals. Democratic voters go from {fact:dem_b5_2008} to {fact:dem_b5_2024} and Republican voters from {fact:rep_b5_2008} to {fact:rep_b5_2024}, so both dots lie to the right of their rings and the Democratic row moves further.",
  "caption": "The highest bracket's share rose for both parties, by more among Democratic voters. The ring is 2008 and the dot is 2024, and each end is the share of a party's voters in the highest bracket, with a confidence interval.",
  "data": [
    {
      "hi_2008": 7.18034,
      "hi_2024": 16.1817,
      "lo_2008": 6.03407,
      "lo_2024": 14.6346,
      "n_2008": 10942,
      "n_2024": 21814,
      "party": "Democratic voters",
      "share_2008": 6.60721,
      "share_2024": 15.4082
    },
    {
      "hi_2008": 7.42554,
      "hi_2024": 12.0449,
      "lo_2008": 6.34484,
      "lo_2024": 10.5926,
      "n_2008": 11269,
      "n_2024": 16779,
      "party": "Republican voters",
      "share_2008": 6.88519,
      "share_2024": 11.3187
    }
  ],
  "id": "top_bracket_by_party",
  "notes": [
    "Brackets are in the nominal dollars of each survey year; the lowest and highest brackets hold a different share of voters in different years.",
    "Intervals are model based (Kish effective sample size, normal approximation) and ignore clustering in the sample design."
  ],
  "source": "Cooperative Election Study cumulative file, presidential years 2008, 2012, 2016, 2020 and 2024; weighted (weight_cumulative); two-party presidential voters who reported household income",
  "spec": {
    "hi1": "hi_2008",
    "hi2": "hi_2024",
    "label1": "2008",
    "label2": "2024",
    "lo1": "lo_2008",
    "lo2": "lo_2024",
    "n1": "n_2008",
    "n2": "n_2024",
    "sort": "data",
    "x1": "share_2008",
    "x2": "share_2024",
    "xDomain": [
      0,
      20
    ],
    "xFormat": {
      "digits": 1
    },
    "xLabel": "Voters in the highest income bracket (% of the party's voters)",
    "y": "party"
  },
  "subtitle": "Share of each party's two-party presidential voters who live in a household in the highest income bracket, percent, 2008 and 2024; voters who reported income; 95% intervals from the Kish effective sample size",
  "table": {
    "columns": [
      {
        "key": "party",
        "label": "Party's voters"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "share_2008",
        "label": "Share 2008 (%)"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "lo_2008",
        "label": "95% CI low 2008"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "hi_2008",
        "label": "95% CI high 2008"
      },
      {
        "key": "n_2008",
        "label": "n 2008"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "share_2024",
        "label": "Share 2024 (%)"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "lo_2024",
        "label": "95% CI low 2024"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "hi_2024",
        "label": "95% CI high 2024"
      },
      {
        "key": "n_2024",
        "label": "n 2024"
      }
    ]
  },
  "title": "The highest bracket's share of Democratic voters rose from {fact:dem_b5_2008} in 2008 to {fact:dem_b5_2024} in 2024, and of Republican voters from {fact:rep_b5_2008} to {fact:rep_b5_2024}",
  "type": "dumbbell",
  "width": "body"
}