{
  "alt": "Line chart with two lines by survey year, Democrats and Republicans, with confidence bands. In the ANES view the Democratic line rises from {fact:anes_dem_1980} in 1980 to {fact:anes_dem_2024} in 2024 and the Republican line falls from {fact:anes_rep_1980} to {fact:anes_rep_2024}. In the GSS view the Democratic line rises from {fact:gss_dem_1977} in 1977 to {fact:gss_dem_2024} in 2024 and the Republican line goes from {fact:gss_rep_1977} to {fact:gss_rep_2024}.",
  "caption": "The Democratic line climbs while the Republican line moves down, so the gap opens mostly from the Democratic side. Bands are 95% confidence intervals and the shaded band marks a change in survey mode. Switch the view for the other survey; the two questions differ, so only direction and timing are comparable.",
  "data": [
    {
      "conf_high": 40.68,
      "conf_low": 33.9767,
      "estimate": 37.3283,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 801,
      "year": 1980
    },
    {
      "conf_high": 39.4915,
      "conf_low": 32.5733,
      "estimate": 36.0324,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 741,
      "year": 1982
    },
    {
      "conf_high": 42.4211,
      "conf_low": 36.4548,
      "estimate": 39.438,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 1032,
      "year": 1984
    },
    {
      "conf_high": 43.8646,
      "conf_low": 37.945,
      "estimate": 40.9048,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 1061,
      "year": 1986
    },
    {
      "conf_high": 40.0849,
      "conf_low": 33.9024,
      "estimate": 36.9936,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 938,
      "year": 1988
    },
    {
      "conf_high": 46.3865,
      "conf_low": 40.2197,
      "estimate": 43.3031,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 993,
      "year": 1990
    },
    {
      "conf_high": 55.5951,
      "conf_low": 49.9327,
      "estimate": 52.7639,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 1201,
      "year": 1992
    },
    {
      "conf_high": 50.1867,
      "conf_low": 42.529,
      "estimate": 46.3578,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 810,
      "year": 1994
    },
    {
      "conf_high": 49.7896,
      "conf_low": 42.398,
      "estimate": 46.0938,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 879,
      "year": 1996
    },
    {
      "conf_high": 51.3605,
      "conf_low": 43.0259,
      "estimate": 47.1932,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 647,
      "year": 1998
    },
    {
      "conf_high": 50.9187,
      "conf_low": 43.4579,
      "estimate": 47.1883,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 868,
      "year": 2000
    },
    {
      "conf_high": 49.4421,
      "conf_low": 39.7141,
      "estimate": 44.5781,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 498,
      "year": 2004
    },
    {
      "conf_high": 56.1787,
      "conf_low": 45.8559,
      "estimate": 51.0173,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 600,
      "year": 2008
    },
    {
      "conf_high": 61.3926,
      "conf_low": 56.5426,
      "estimate": 58.9676,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 3081,
      "year": 2012
    },
    {
      "conf_high": 63.015,
      "conf_low": 57.7149,
      "estimate": 60.3649,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 1915,
      "year": 2016
    },
    {
      "conf_high": 74.1102,
      "conf_low": 70.1126,
      "estimate": 72.1114,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 3713,
      "year": 2020
    },
    {
      "conf_high": 76.2289,
      "conf_low": 71.1526,
      "estimate": 73.6908,
      "group": "Democrats",
      "instrument": "ANES: always allowed",
      "n": 2459,
      "year": 2024
    },
    {
      "conf_high": 37.8901,
      "conf_low": 29.6881,
      "estimate": 33.7891,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 512,
      "year": 1980
    },
    {
      "conf_high": 40.6457,
      "conf_low": 31.5765,
      "estimate": 36.1111,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 432,
      "year": 1982
    },
    {
      "conf_high": 35.9747,
      "conf_low": 29.6795,
      "estimate": 32.8271,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 856,
      "year": 1984
    },
    {
      "conf_high": 41.6401,
      "conf_low": 34.7139,
      "estimate": 38.177,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 757,
      "year": 1986
    },
    {
      "conf_high": 36.7017,
      "conf_low": 30.211,
      "estimate": 33.4563,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 813,
      "year": 1988
    },
    {
      "conf_high": 42.2387,
      "conf_low": 35.0146,
      "estimate": 38.6266,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 699,
      "year": 1990
    },
    {
      "conf_high": 41.9028,
      "conf_low": 35.5077,
      "estimate": 38.7053,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 896,
      "year": 1992
    },
    {
      "conf_high": 37.6979,
      "conf_low": 30.15,
      "estimate": 33.924,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 727,
      "year": 1994
    },
    {
      "conf_high": 37.8548,
      "conf_low": 29.6442,
      "estimate": 33.7495,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 642,
      "year": 1996
    },
    {
      "conf_high": 36.3562,
      "conf_low": 27.0954,
      "estimate": 31.7258,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 459,
      "year": 1998
    },
    {
      "conf_high": 34.8887,
      "conf_low": 27.1613,
      "estimate": 31.025,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 664,
      "year": 2000
    },
    {
      "conf_high": 30.1941,
      "conf_low": 21.2605,
      "estimate": 25.7273,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 433,
      "year": 2004
    },
    {
      "conf_high": 35.2681,
      "conf_low": 23.2673,
      "estimate": 29.2677,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 293,
      "year": 2008
    },
    {
      "conf_high": 31.5675,
      "conf_low": 26.448,
      "estimate": 29.0078,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 1987,
      "year": 2012
    },
    {
      "conf_high": 29.9984,
      "conf_low": 24.947,
      "estimate": 27.4727,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 1715,
      "year": 2016
    },
    {
      "conf_high": 25.9316,
      "conf_low": 22.0822,
      "estimate": 24.0069,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 3289,
      "year": 2020
    },
    {
      "conf_high": 23.838,
      "conf_low": 18.8646,
      "estimate": 21.3513,
      "group": "Republicans",
      "instrument": "ANES: always allowed",
      "n": 2207,
      "year": 2024
    },
    {
      "conf_high": 38.858,
      "conf_low": 31.6264,
      "estimate": 35.2422,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 852,
      "year": 1977
    },
    {
      "conf_high": 36.2239,
      "conf_low": 28.0404,
      "estimate": 32.1322,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 781,
      "year": 1978
    },
    {
      "conf_high": 45.158,
      "conf_low": 36.2972,
      "estimate": 40.7276,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 725,
      "year": 1980
    },
    {
      "conf_high": 44.3541,
      "conf_low": 36.461,
      "estimate": 40.4076,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 1052,
      "year": 1982
    },
    {
      "conf_high": 34.5998,
      "conf_low": 26.328,
      "estimate": 30.4639,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 810,
      "year": 1983
    },
    {
      "conf_high": 40.5592,
      "conf_low": 31.9277,
      "estimate": 36.2434,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 731,
      "year": 1984
    },
    {
      "conf_high": 43.6964,
      "conf_low": 34.6477,
      "estimate": 39.1721,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 725,
      "year": 1985
    },
    {
      "conf_high": 44.0758,
      "conf_low": 36.3424,
      "estimate": 40.2091,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 990,
      "year": 1987
    },
    {
      "conf_high": 46.6221,
      "conf_low": 36.6,
      "estimate": 41.611,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 464,
      "year": 1988
    },
    {
      "conf_high": 46.5005,
      "conf_low": 36.1854,
      "estimate": 41.343,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 459,
      "year": 1989
    },
    {
      "conf_high": 52.062,
      "conf_low": 40.4599,
      "estimate": 46.2609,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 364,
      "year": 1990
    },
    {
      "conf_high": 49.3787,
      "conf_low": 38.3593,
      "estimate": 43.869,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 407,
      "year": 1991
    },
    {
      "conf_high": 57.7074,
      "conf_low": 47.4938,
      "estimate": 52.6006,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 473,
      "year": 1993
    },
    {
      "conf_high": 53.9611,
      "conf_low": 46.6797,
      "estimate": 50.3204,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 925,
      "year": 1994
    },
    {
      "conf_high": 53.1597,
      "conf_low": 45.4463,
      "estimate": 49.303,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 830,
      "year": 1996
    },
    {
      "conf_high": 49.4499,
      "conf_low": 41.8403,
      "estimate": 45.6451,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 846,
      "year": 1998
    },
    {
      "conf_high": 47.3319,
      "conf_low": 39.4165,
      "estimate": 43.3742,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 785,
      "year": 2000
    },
    {
      "conf_high": 54.5757,
      "conf_low": 43.022,
      "estimate": 48.7989,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 397,
      "year": 2002
    },
    {
      "conf_high": 54.8185,
      "conf_low": 42.922,
      "estimate": 48.8702,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 376,
      "year": 2004
    },
    {
      "conf_high": 54.0397,
      "conf_low": 45.6363,
      "estimate": 49.838,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 834,
      "year": 2006
    },
    {
      "conf_high": 51.7914,
      "conf_low": 42.1344,
      "estimate": 46.9629,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 614,
      "year": 2008
    },
    {
      "conf_high": 56.2158,
      "conf_low": 45.8929,
      "estimate": 51.0544,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 560,
      "year": 2010
    },
    {
      "conf_high": 57.5925,
      "conf_low": 47.6605,
      "estimate": 52.6265,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 580,
      "year": 2012
    },
    {
      "conf_high": 60.3267,
      "conf_low": 52.0027,
      "estimate": 56.1647,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 775,
      "year": 2014
    },
    {
      "conf_high": 60.4168,
      "conf_low": 52.1269,
      "estimate": 56.2719,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 877,
      "year": 2016
    },
    {
      "conf_high": 69.9117,
      "conf_low": 60.8432,
      "estimate": 65.3774,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 689,
      "year": 2018
    },
    {
      "conf_high": 75.3376,
      "conf_low": 66.378,
      "estimate": 70.8578,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 637,
      "year": 2021
    },
    {
      "conf_high": 88.1922,
      "conf_low": 78.3104,
      "estimate": 83.2513,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 476,
      "year": 2022
    },
    {
      "conf_high": 84.4927,
      "conf_low": 76.6826,
      "estimate": 80.5876,
      "group": "Democrats",
      "instrument": "GSS: any reason",
      "n": 810,
      "year": 2024
    },
    {
      "conf_high": 46.75,
      "conf_low": 36.6895,
      "estimate": 41.7197,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 447,
      "year": 1977
    },
    {
      "conf_high": 41.3776,
      "conf_low": 30.5242,
      "estimate": 35.9509,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 482,
      "year": 1978
    },
    {
      "conf_high": 43.7077,
      "conf_low": 32.8388,
      "estimate": 38.2732,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 440,
      "year": 1980
    },
    {
      "conf_high": 46.8166,
      "conf_low": 35.8261,
      "estimate": 41.3213,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 480,
      "year": 1982
    },
    {
      "conf_high": 43.0534,
      "conf_low": 32.7368,
      "estimate": 37.8951,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 512,
      "year": 1983
    },
    {
      "conf_high": 46.4103,
      "conf_low": 35.5735,
      "estimate": 40.9919,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 514,
      "year": 1984
    },
    {
      "conf_high": 42.0072,
      "conf_low": 32.4674,
      "estimate": 37.2373,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 597,
      "year": 1985
    },
    {
      "conf_high": 47.563,
      "conf_low": 37.7439,
      "estimate": 42.6535,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 537,
      "year": 1987
    },
    {
      "conf_high": 37.8116,
      "conf_low": 27.0659,
      "estimate": 32.4388,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 353,
      "year": 1988
    },
    {
      "conf_high": 42.0916,
      "conf_low": 31.551,
      "estimate": 36.8213,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 402,
      "year": 1989
    },
    {
      "conf_high": 45.3133,
      "conf_low": 34.489,
      "estimate": 39.9012,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 402,
      "year": 1990
    },
    {
      "conf_high": 46.4189,
      "conf_low": 35.9194,
      "estimate": 41.1692,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 409,
      "year": 1991
    },
    {
      "conf_high": 42.7134,
      "conf_low": 31.8785,
      "estimate": 37.296,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 399,
      "year": 1993
    },
    {
      "conf_high": 45.7363,
      "conf_low": 37.6583,
      "estimate": 41.6973,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 722,
      "year": 1994
    },
    {
      "conf_high": 41.9805,
      "conf_low": 34.0376,
      "estimate": 38.009,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 683,
      "year": 1996
    },
    {
      "conf_high": 35.2893,
      "conf_low": 27.0091,
      "estimate": 31.1492,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 603,
      "year": 1998
    },
    {
      "conf_high": 35.313,
      "conf_low": 27.0711,
      "estimate": 31.1921,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 593,
      "year": 2000
    },
    {
      "conf_high": 35.5839,
      "conf_low": 24.0594,
      "estimate": 29.8216,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 322,
      "year": 2002
    },
    {
      "conf_high": 37.1382,
      "conf_low": 25.7375,
      "estimate": 31.4379,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 324,
      "year": 2004
    },
    {
      "conf_high": 34.1674,
      "conf_low": 25.8075,
      "estimate": 29.9874,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 652,
      "year": 2006
    },
    {
      "conf_high": 40.2634,
      "conf_low": 29.8113,
      "estimate": 35.0373,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 437,
      "year": 2008
    },
    {
      "conf_high": 37.3955,
      "conf_low": 26.2981,
      "estimate": 31.8468,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 408,
      "year": 2010
    },
    {
      "conf_high": 34.4943,
      "conf_low": 22.9705,
      "estimate": 28.7324,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 386,
      "year": 2012
    },
    {
      "conf_high": 37.3479,
      "conf_low": 28.0754,
      "estimate": 32.7117,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 515,
      "year": 2014
    },
    {
      "conf_high": 39.4321,
      "conf_low": 30.1354,
      "estimate": 34.7838,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 588,
      "year": 2016
    },
    {
      "conf_high": 39.7805,
      "conf_low": 29.0543,
      "estimate": 34.4174,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 500,
      "year": 2018
    },
    {
      "conf_high": 39.7297,
      "conf_low": 28.3939,
      "estimate": 34.0618,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 407,
      "year": 2021
    },
    {
      "conf_high": 37.076,
      "conf_low": 22.5023,
      "estimate": 29.7892,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 355,
      "year": 2022
    },
    {
      "conf_high": 37.7389,
      "conf_low": 28.4794,
      "estimate": 33.1092,
      "group": "Republicans",
      "instrument": "GSS: any reason",
      "n": 724,
      "year": 2024
    }
  ],
  "id": "share_by_party",
  "notes": [
    "Shaded band: the ANES mode change from 2016 to 2020 in the ANES view, and the GSS move from in-person to web interviews between 2018 and 2021 in the GSS view."
  ],
  "source": "ANES Cumulative Data File, 1980-2024, and General Social Survey, 1977-2024; weighted (VCF0009z, which equals 1 for every respondent from 1980 to 1990; weight_use)",
  "spec": {
    "annotations": [
      {
        "label": "ANES mode change",
        "type": "band",
        "x1": 2016,
        "x2": 2020
      }
    ],
    "colors": {
      "Democrats": "dem",
      "Republicans": "rep"
    },
    "hi": "conf_high",
    "lo": "conf_low",
    "n": "n",
    "series": "group",
    "x": "year",
    "xDomain": [
      1976,
      2025
    ],
    "xLabel": "Survey year",
    "y": "estimate",
    "yDomain": [
      0,
      100
    ],
    "yFormat": {
      "digits": 0,
      "suffix": "%"
    },
    "yLabel": "Share choosing the answer (%)"
  },
  "subtitle": "Share saying abortion should always be allowed (ANES) or legal for any reason (GSS), by party identification including leaners; 95% intervals",
  "table": {
    "columns": [
      {
        "key": "instrument",
        "label": "Survey and item"
      },
      {
        "key": "group",
        "label": "Group"
      },
      {
        "key": "year",
        "label": "Year"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "estimate",
        "label": "Share (%)"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "conf_low",
        "label": "Lower"
      },
      {
        "format": {
          "digits": 1
        },
        "key": "conf_high",
        "label": "Upper"
      },
      {
        "format": {
          "thousands": true
        },
        "key": "n",
        "label": "Respondents"
      }
    ]
  },
  "title": "Democratic support for legal abortion rose while Republican support fell",
  "type": "line",
  "views": [
    {
      "filter": {
        "instrument": "ANES: always allowed"
      },
      "id": "anes",
      "label": "ANES: always allowed"
    },
    {
      "filter": {
        "instrument": "GSS: any reason"
      },
      "id": "gss",
      "label": "GSS: any reason",
      "spec": {
        "annotations": [
          {
            "label": "GSS mode change",
            "type": "band",
            "x1": 2018,
            "x2": 2021
          }
        ]
      }
    }
  ],
  "width": "wide"
}