{
  "alt": "Line chart by presidential election from 1992 to 2024 with two lines. The voter line is {fact:split_h_1992} in 1992, {fact:split_h_2008} in 2008, {fact:split_h_2012} in 2012, {fact:split_h_2016} in 2016 and {fact:split_h_2024} in 2024. The county line is {fact:house_div_1992} in 1992, {fact:house_div_2008} in 2008, {fact:house_div_2012} in 2012, {fact:house_div_2016} in 2016 and {fact:house_div_2024} in 2024.",
  "caption": "Both lines fall between 2008 and 2012 and are lowest in 2024, and they do not move together at every step: the voter line rises in 2016 while the county line keeps falling. The two lines are shares of different things, voters and counties, plotted on one percent scale.",
  "data": [
    {
      "conf_high": 24.7788,
      "conf_low": 19.9014,
      "n_units": 1126,
      "series": "Voters who split their ticket (ANES)",
      "value": 22.3401,
      "year": 1992
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2735,
      "series": "Counties with different winners",
      "value": 31.042,
      "year": 1992
    },
    {
      "conf_high": 20.3851,
      "conf_low": 14.9379,
      "n_units": 926,
      "series": "Voters who split their ticket (ANES)",
      "value": 17.6615,
      "year": 1996
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2703,
      "series": "Counties with different winners",
      "value": 25.6012,
      "year": 1996
    },
    {
      "conf_high": 21.1826,
      "conf_low": 15.5127,
      "n_units": 882,
      "series": "Voters who split their ticket (ANES)",
      "value": 18.3476,
      "year": 2000
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2555,
      "series": "Counties with different winners",
      "value": 27.045,
      "year": 2000
    },
    {
      "conf_high": 19.8209,
      "conf_low": 13.7843,
      "n_units": 701,
      "series": "Voters who split their ticket (ANES)",
      "value": 16.8026,
      "year": 2004
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2479,
      "series": "Counties with different winners",
      "value": 25.4538,
      "year": 2004
    },
    {
      "conf_high": 19.3293,
      "conf_low": 14.128,
      "n_units": 1222,
      "series": "Voters who split their ticket (ANES)",
      "value": 16.7286,
      "year": 2008
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2661,
      "series": "Counties with different winners",
      "value": 26.6065,
      "year": 2008
    },
    {
      "conf_high": 11.1397,
      "conf_low": 8.48733,
      "n_units": 3501,
      "series": "Voters who split their ticket (ANES)",
      "value": 9.81353,
      "year": 2012
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2609,
      "series": "Counties with different winners",
      "value": 9.65887,
      "year": 2012
    },
    {
      "conf_high": 17.1294,
      "conf_low": 13.4317,
      "n_units": 2138,
      "series": "Voters who split their ticket (ANES)",
      "value": 15.2805,
      "year": 2016
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2427,
      "series": "Counties with different winners",
      "value": 7.74619,
      "year": 2016
    },
    {
      "conf_high": 12.5713,
      "conf_low": 10.1334,
      "n_units": 5167,
      "series": "Voters who split their ticket (ANES)",
      "value": 11.3524,
      "year": 2020
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2884,
      "series": "Counties with different winners",
      "value": 3.01664,
      "year": 2020
    },
    {
      "conf_high": 5.69357,
      "conf_low": 3.68641,
      "n_units": 3515,
      "series": "Voters who split their ticket (ANES)",
      "value": 4.68999,
      "year": 2024
    },
    {
      "conf_high": null,
      "conf_low": null,
      "n_units": 2695,
      "series": "Counties with different winners",
      "value": 2.82004,
      "year": 2024
    }
  ],
  "id": "both_measures",
  "notes": [
    "The voter line is the ANES rate of self-reported splitting among respondents with a major-party vote for president and the House. The county line is a share of counties and has no sampling interval."
  ],
  "source": "ANES Cumulative Data File, 1992-2024, weighted (post-election weight where the file has one, VCF0009z elsewhere); county returns for President and U.S. House, 1992-2024, full counts, unweighted",
  "spec": {
    "bandSeries": [
      "Voters who split their ticket (ANES)"
    ],
    "colors": {
      "Counties with different winners": "cat2",
      "Voters who split their ticket (ANES)": "cat1"
    },
    "hi": "conf_high",
    "lo": "conf_low",
    "n": "n_units",
    "series": "series",
    "x": "year",
    "xDomain": [
      1990,
      2026
    ],
    "xLabel": "Presidential election",
    "xTicks": [
      1992,
      1996,
      2000,
      2004,
      2008,
      2012,
      2016,
      2020,
      2024
    ],
    "y": "value",
    "yDomain": [
      0,
      40
    ],
    "yFormat": {
      "digits": 0,
      "suffix": "%"
    },
    "yLabel": "Share (%)"
  },
  "subtitle": "Share of ANES voters whose presidential and House votes were for different parties (95% intervals), and share of counties in contested House races with different presidential and House winners, 1992 to 2024",
  "table": {
    "columns": [
      {
        "key": "series",
        "label": "Measure"
      },
      {
        "key": "year",
        "label": "Election"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "value",
        "label": "Share (%)"
      },
      {
        "format": {
          "thousands": true
        },
        "key": "n_units",
        "label": "Respondents or counties"
      }
    ]
  },
  "title": "Between 1992 and 2024 the share of ANES voters who split their ticket fell by {fact:both_chg_anes} points and the share of divided counties by {fact:house_fall_1992_2024} points",
  "type": "line",
  "width": "wide"
}