{
  "alt": "Three lines, one each for the ANES, the GSS and the CES. The ANES and GSS lines climb from the lower part of the axis in the 1970s and 1980s to the upper part in the 2020s. The ANES line starts at {fact:anes_r_1972} in 1972 and ends at {fact:anes_r_2024} in 2024. The GSS line runs below the ANES line in every year that both ran. The CES line begins in 2006 above the other two, falls from {fact:ces_r_2008} in 2008 to {fact:ces_r_2016} in 2016 and ends at {fact:ces_r_2024}.",
  "caption": "Each line ends higher than it starts, and the CES line falls between 2008 and 2016. Each point is one survey year and the band is its 95% interval. Grey shading marks 1980 to 1988 and 2020 to 2024, the two windows that the chapter Party and ideology compares.",
  "data": [
    {
      "basis": "All interviews",
      "conf_high": 0.3642,
      "conf_low": 0.2747,
      "estimate": 0.3202,
      "line": "ANES",
      "n": 1545,
      "n_eff": 1545,
      "survey": "ANES",
      "view_id": "all",
      "year": 1972
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3863,
      "conf_low": 0.2667,
      "estimate": 0.3279,
      "line": "ANES",
      "n": 1140,
      "n_eff": 857,
      "survey": "ANES",
      "view_id": "all",
      "year": 1974
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4199,
      "conf_low": 0.3312,
      "estimate": 0.3764,
      "line": "ANES",
      "n": 1497,
      "n_eff": 1441.1,
      "survey": "ANES",
      "view_id": "all",
      "year": 1976
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3921,
      "conf_low": 0.3077,
      "estimate": 0.3506,
      "line": "ANES",
      "n": 1658,
      "n_eff": 1658,
      "survey": "ANES",
      "view_id": "all",
      "year": 1978
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4391,
      "conf_low": 0.3339,
      "estimate": 0.3877,
      "line": "ANES",
      "n": 1004,
      "n_eff": 1004,
      "survey": "ANES",
      "view_id": "all",
      "year": 1980
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4675,
      "conf_low": 0.3587,
      "estimate": 0.4146,
      "line": "ANES",
      "n": 891,
      "n_eff": 891,
      "survey": "ANES",
      "view_id": "all",
      "year": 1982
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4485,
      "conf_low": 0.3654,
      "estimate": 0.4078,
      "line": "ANES",
      "n": 1546,
      "n_eff": 1546,
      "survey": "ANES",
      "view_id": "all",
      "year": 1984
    },
    {
      "basis": "All interviews",
      "conf_high": 0.405,
      "conf_low": 0.3205,
      "estimate": 0.3635,
      "line": "ANES",
      "n": 1622,
      "n_eff": 1622,
      "survey": "ANES",
      "view_id": "all",
      "year": 1986
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4471,
      "conf_low": 0.36,
      "estimate": 0.4045,
      "line": "ANES",
      "n": 1419,
      "n_eff": 1419,
      "survey": "ANES",
      "view_id": "all",
      "year": 1988
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3876,
      "conf_low": 0.292,
      "estimate": 0.3407,
      "line": "ANES",
      "n": 1315,
      "n_eff": 1315,
      "survey": "ANES",
      "view_id": "all",
      "year": 1990
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4732,
      "conf_low": 0.3986,
      "estimate": 0.4366,
      "line": "ANES",
      "n": 1819,
      "n_eff": 1812.4,
      "survey": "ANES",
      "view_id": "all",
      "year": 1992
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5471,
      "conf_low": 0.4606,
      "estimate": 0.5051,
      "line": "ANES",
      "n": 1398,
      "n_eff": 1143.8,
      "survey": "ANES",
      "view_id": "all",
      "year": 1994
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5802,
      "conf_low": 0.4951,
      "estimate": 0.539,
      "line": "ANES",
      "n": 1326,
      "n_eff": 1069.8,
      "survey": "ANES",
      "view_id": "all",
      "year": 1996
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4943,
      "conf_low": 0.3865,
      "estimate": 0.442,
      "line": "ANES",
      "n": 1012,
      "n_eff": 857.9,
      "survey": "ANES",
      "view_id": "all",
      "year": 1998
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5284,
      "conf_low": 0.3967,
      "estimate": 0.4651,
      "line": "ANES",
      "n": 669,
      "n_eff": 545.8,
      "survey": "ANES",
      "view_id": "all",
      "year": 2000
    },
    {
      "basis": "All interviews",
      "conf_high": 0.566,
      "conf_low": 0.4661,
      "estimate": 0.5178,
      "line": "ANES",
      "n": 1223,
      "n_eff": 828.2,
      "survey": "ANES",
      "view_id": "all",
      "year": 2002
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6263,
      "conf_low": 0.5323,
      "estimate": 0.5812,
      "line": "ANES",
      "n": 913,
      "n_eff": 766.2,
      "survey": "ANES",
      "view_id": "all",
      "year": 2004
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6492,
      "conf_low": 0.5736,
      "estimate": 0.6128,
      "line": "ANES",
      "n": 1607,
      "n_eff": 1053,
      "survey": "ANES",
      "view_id": "all",
      "year": 2008
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6347,
      "conf_low": 0.5898,
      "estimate": 0.6128,
      "line": "ANES",
      "n": 5288,
      "n_eff": 2969.7,
      "survey": "ANES",
      "view_id": "all",
      "year": 2012
    },
    {
      "basis": "All interviews",
      "conf_high": 0.7177,
      "conf_low": 0.6759,
      "estimate": 0.6974,
      "line": "ANES",
      "n": 3298,
      "n_eff": 2331.5,
      "survey": "ANES",
      "view_id": "all",
      "year": 2016
    },
    {
      "basis": "All interviews",
      "conf_high": 0.7508,
      "conf_low": 0.7222,
      "estimate": 0.7368,
      "line": "ANES",
      "n": 7041,
      "n_eff": 3928.7,
      "survey": "ANES",
      "view_id": "all",
      "year": 2020
    },
    {
      "basis": "All interviews",
      "conf_high": 0.7421,
      "conf_low": 0.7024,
      "estimate": 0.7229,
      "line": "ANES",
      "n": 4716,
      "n_eff": 2228.2,
      "survey": "ANES",
      "view_id": "all",
      "year": 2024
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2295,
      "conf_low": 0.116,
      "estimate": 0.1733,
      "line": "GSS",
      "n": 1345,
      "n_eff": 1122.2,
      "survey": "GSS",
      "view_id": "all",
      "year": 1974
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2857,
      "conf_low": 0.1756,
      "estimate": 0.2314,
      "line": "GSS",
      "n": 1384,
      "n_eff": 1135.8,
      "survey": "GSS",
      "view_id": "all",
      "year": 1975
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2718,
      "conf_low": 0.161,
      "estimate": 0.2171,
      "line": "GSS",
      "n": 1393,
      "n_eff": 1137,
      "survey": "GSS",
      "view_id": "all",
      "year": 1976
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2713,
      "conf_low": 0.1615,
      "estimate": 0.2171,
      "line": "GSS",
      "n": 1440,
      "n_eff": 1159.8,
      "survey": "GSS",
      "view_id": "all",
      "year": 1977
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2202,
      "conf_low": 0.0917,
      "estimate": 0.1566,
      "line": "GSS",
      "n": 1422,
      "n_eff": 885.4,
      "survey": "GSS",
      "view_id": "all",
      "year": 1978
    },
    {
      "basis": "All interviews",
      "conf_high": 0.2063,
      "conf_low": 0.0811,
      "estimate": 0.1443,
      "line": "GSS",
      "n": 1418,
      "n_eff": 940.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 1980
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3,
      "conf_low": 0.1852,
      "estimate": 0.2435,
      "line": "GSS",
      "n": 1723,
      "n_eff": 1032.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 1982
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3633,
      "conf_low": 0.1988,
      "estimate": 0.2831,
      "line": "GSS",
      "n": 763,
      "n_eff": 481.8,
      "survey": "GSS",
      "view_id": "all",
      "year": 1983
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3202,
      "conf_low": 0.1976,
      "estimate": 0.26,
      "line": "GSS",
      "n": 1386,
      "n_eff": 889.2,
      "survey": "GSS",
      "view_id": "all",
      "year": 1984
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3373,
      "conf_low": 0.218,
      "estimate": 0.2787,
      "line": "GSS",
      "n": 1444,
      "n_eff": 918.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 1985
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3625,
      "conf_low": 0.2571,
      "estimate": 0.3107,
      "line": "GSS",
      "n": 1390,
      "n_eff": 1131.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 1986
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3576,
      "conf_low": 0.2517,
      "estimate": 0.3056,
      "line": "GSS",
      "n": 1666,
      "n_eff": 1125.7,
      "survey": "GSS",
      "view_id": "all",
      "year": 1987
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3484,
      "conf_low": 0.2424,
      "estimate": 0.2963,
      "line": "GSS",
      "n": 1411,
      "n_eff": 1139.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 1988
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3215,
      "conf_low": 0.2131,
      "estimate": 0.2682,
      "line": "GSS",
      "n": 1429,
      "n_eff": 1127.4,
      "survey": "GSS",
      "view_id": "all",
      "year": 1989
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3463,
      "conf_low": 0.2341,
      "estimate": 0.2912,
      "line": "GSS",
      "n": 1301,
      "n_eff": 1023.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 1990
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3099,
      "conf_low": 0.1996,
      "estimate": 0.2556,
      "line": "GSS",
      "n": 1443,
      "n_eff": 1105.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 1991
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3846,
      "conf_low": 0.2839,
      "estimate": 0.3352,
      "line": "GSS",
      "n": 1528,
      "n_eff": 1195.9,
      "survey": "GSS",
      "view_id": "all",
      "year": 1993
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4087,
      "conf_low": 0.3368,
      "estimate": 0.3733,
      "line": "GSS",
      "n": 2806,
      "n_eff": 2204,
      "survey": "GSS",
      "view_id": "all",
      "year": 1994
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4189,
      "conf_low": 0.3471,
      "estimate": 0.3836,
      "line": "GSS",
      "n": 2702,
      "n_eff": 2168.2,
      "survey": "GSS",
      "view_id": "all",
      "year": 1996
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3983,
      "conf_low": 0.3227,
      "estimate": 0.3611,
      "line": "GSS",
      "n": 2622,
      "n_eff": 2032.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 1998
    },
    {
      "basis": "All interviews",
      "conf_high": 0.3809,
      "conf_low": 0.3042,
      "estimate": 0.3431,
      "line": "GSS",
      "n": 2593,
      "n_eff": 2038.4,
      "survey": "GSS",
      "view_id": "all",
      "year": 2000
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4237,
      "conf_low": 0.3135,
      "estimate": 0.3699,
      "line": "GSS",
      "n": 1299,
      "n_eff": 944.3,
      "survey": "GSS",
      "view_id": "all",
      "year": 2002
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4811,
      "conf_low": 0.3766,
      "estimate": 0.4303,
      "line": "GSS",
      "n": 1289,
      "n_eff": 937.4,
      "survey": "GSS",
      "view_id": "all",
      "year": 2004
    },
    {
      "basis": "All interviews",
      "conf_high": 0.4961,
      "conf_low": 0.4398,
      "estimate": 0.4684,
      "line": "GSS",
      "n": 4253,
      "n_eff": 2951.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 2006
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5238,
      "conf_low": 0.4412,
      "estimate": 0.4835,
      "line": "GSS",
      "n": 1890,
      "n_eff": 1324.2,
      "survey": "GSS",
      "view_id": "all",
      "year": 2008
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5392,
      "conf_low": 0.4552,
      "estimate": 0.4984,
      "line": "GSS",
      "n": 1914,
      "n_eff": 1231.3,
      "survey": "GSS",
      "view_id": "all",
      "year": 2010
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5134,
      "conf_low": 0.4233,
      "estimate": 0.4696,
      "line": "GSS",
      "n": 1815,
      "n_eff": 1153.4,
      "survey": "GSS",
      "view_id": "all",
      "year": 2012
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5298,
      "conf_low": 0.4587,
      "estimate": 0.4951,
      "line": "GSS",
      "n": 2368,
      "n_eff": 1733.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 2014
    },
    {
      "basis": "All interviews",
      "conf_high": 0.534,
      "conf_low": 0.4643,
      "estimate": 0.5,
      "line": "GSS",
      "n": 2668,
      "n_eff": 1781.6,
      "survey": "GSS",
      "view_id": "all",
      "year": 2016
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5984,
      "conf_low": 0.5236,
      "estimate": 0.5621,
      "line": "GSS",
      "n": 2149,
      "n_eff": 1285.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 2018
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6652,
      "conf_low": 0.6192,
      "estimate": 0.6428,
      "line": "GSS",
      "n": 3833,
      "n_eff": 2500.7,
      "survey": "GSS",
      "view_id": "all",
      "year": 2021
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6585,
      "conf_low": 0.5924,
      "estimate": 0.6266,
      "line": "GSS",
      "n": 3303,
      "n_eff": 1304,
      "survey": "GSS",
      "view_id": "all",
      "year": 2022
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6601,
      "conf_low": 0.6003,
      "estimate": 0.6311,
      "line": "GSS",
      "n": 3062,
      "n_eff": 1557.1,
      "survey": "GSS",
      "view_id": "all",
      "year": 2024
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6652,
      "conf_low": 0.6515,
      "estimate": 0.6584,
      "line": "CES",
      "n": 33755,
      "n_eff": 26295,
      "survey": "CES",
      "view_id": "all",
      "year": 2006
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6987,
      "conf_low": 0.6679,
      "estimate": 0.6836,
      "line": "CES",
      "n": 8787,
      "n_eff": 4592.5,
      "survey": "CES",
      "view_id": "all",
      "year": 2007
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6847,
      "conf_low": 0.67,
      "estimate": 0.6774,
      "line": "CES",
      "n": 29939,
      "n_eff": 20888.4,
      "survey": "CES",
      "view_id": "all",
      "year": 2008
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6677,
      "conf_low": 0.6445,
      "estimate": 0.6563,
      "line": "CES",
      "n": 12229,
      "n_eff": 9223.2,
      "survey": "CES",
      "view_id": "all",
      "year": 2009
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6647,
      "conf_low": 0.649,
      "estimate": 0.6569,
      "line": "CES",
      "n": 51574,
      "n_eff": 20318.4,
      "survey": "CES",
      "view_id": "all",
      "year": 2010
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6114,
      "conf_low": 0.5844,
      "estimate": 0.5981,
      "line": "CES",
      "n": 18329,
      "n_eff": 8714.8,
      "survey": "CES",
      "view_id": "all",
      "year": 2011
    },
    {
      "basis": "All interviews",
      "conf_high": 0.636,
      "conf_low": 0.6197,
      "estimate": 0.6279,
      "line": "CES",
      "n": 48972,
      "n_eff": 21136.2,
      "survey": "CES",
      "view_id": "all",
      "year": 2012
    },
    {
      "basis": "All interviews",
      "conf_high": 0.613,
      "conf_low": 0.5836,
      "estimate": 0.5985,
      "line": "CES",
      "n": 14712,
      "n_eff": 7301.6,
      "survey": "CES",
      "view_id": "all",
      "year": 2013
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6277,
      "conf_low": 0.6113,
      "estimate": 0.6196,
      "line": "CES",
      "n": 49876,
      "n_eff": 21740.9,
      "survey": "CES",
      "view_id": "all",
      "year": 2014
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6391,
      "conf_low": 0.6104,
      "estimate": 0.625,
      "line": "CES",
      "n": 12807,
      "n_eff": 6907.4,
      "survey": "CES",
      "view_id": "all",
      "year": 2015
    },
    {
      "basis": "All interviews",
      "conf_high": 0.5973,
      "conf_low": 0.5827,
      "estimate": 0.59,
      "line": "CES",
      "n": 58788,
      "n_eff": 30528.8,
      "survey": "CES",
      "view_id": "all",
      "year": 2016
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6477,
      "conf_low": 0.6212,
      "estimate": 0.6346,
      "line": "CES",
      "n": 16356,
      "n_eff": 7800,
      "survey": "CES",
      "view_id": "all",
      "year": 2017
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6913,
      "conf_low": 0.6782,
      "estimate": 0.6848,
      "line": "CES",
      "n": 54063,
      "n_eff": 25502.7,
      "survey": "CES",
      "view_id": "all",
      "year": 2018
    },
    {
      "basis": "All interviews",
      "conf_high": 0.7022,
      "conf_low": 0.6812,
      "estimate": 0.6919,
      "line": "CES",
      "n": 16478,
      "n_eff": 9481,
      "survey": "CES",
      "view_id": "all",
      "year": 2019
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6918,
      "conf_low": 0.6793,
      "estimate": 0.6856,
      "line": "CES",
      "n": 55395,
      "n_eff": 27431.1,
      "survey": "CES",
      "view_id": "all",
      "year": 2020
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6976,
      "conf_low": 0.6799,
      "estimate": 0.6888,
      "line": "CES",
      "n": 23450,
      "n_eff": 13576.6,
      "survey": "CES",
      "view_id": "all",
      "year": 2021
    },
    {
      "basis": "All interviews",
      "conf_high": 0.7015,
      "conf_low": 0.6887,
      "estimate": 0.6952,
      "line": "CES",
      "n": 54964,
      "n_eff": 24917,
      "survey": "CES",
      "view_id": "all",
      "year": 2022
    },
    {
      "basis": "All interviews",
      "conf_high": 0.6645,
      "conf_low": 0.6443,
      "estimate": 0.6545,
      "line": "CES",
      "n": 22029,
      "n_eff": 12323.1,
      "survey": "CES",
      "view_id": "all",
      "year": 2023
    },
    {
      "basis": "All interviews",
      "conf_high": 0.726,
      "conf_low": 0.7121,
      "estimate": 0.7191,
      "line": "CES",
      "n": 55835,
      "n_eff": 18535.9,
      "survey": "CES",
      "view_id": "all",
      "year": 2024
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.3642,
      "conf_low": 0.2747,
      "estimate": 0.3202,
      "line": "ANES",
      "n": 1545,
      "n_eff": 1545,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1972
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.3863,
      "conf_low": 0.2667,
      "estimate": 0.3279,
      "line": "ANES",
      "n": 1140,
      "n_eff": 857,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1974
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4199,
      "conf_low": 0.3312,
      "estimate": 0.3764,
      "line": "ANES",
      "n": 1497,
      "n_eff": 1441.1,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1976
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.3921,
      "conf_low": 0.3077,
      "estimate": 0.3506,
      "line": "ANES",
      "n": 1658,
      "n_eff": 1658,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1978
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4391,
      "conf_low": 0.3339,
      "estimate": 0.3877,
      "line": "ANES",
      "n": 1004,
      "n_eff": 1004,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1980
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4675,
      "conf_low": 0.3587,
      "estimate": 0.4146,
      "line": "ANES",
      "n": 891,
      "n_eff": 891,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1982
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4485,
      "conf_low": 0.3654,
      "estimate": 0.4078,
      "line": "ANES",
      "n": 1546,
      "n_eff": 1546,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1984
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.405,
      "conf_low": 0.3205,
      "estimate": 0.3635,
      "line": "ANES",
      "n": 1622,
      "n_eff": 1622,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1986
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4471,
      "conf_low": 0.36,
      "estimate": 0.4045,
      "line": "ANES",
      "n": 1419,
      "n_eff": 1419,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1988
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.3876,
      "conf_low": 0.292,
      "estimate": 0.3407,
      "line": "ANES",
      "n": 1315,
      "n_eff": 1315,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1990
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.4732,
      "conf_low": 0.3986,
      "estimate": 0.4366,
      "line": "ANES",
      "n": 1819,
      "n_eff": 1812.4,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1992
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.5471,
      "conf_low": 0.4606,
      "estimate": 0.5051,
      "line": "ANES",
      "n": 1398,
      "n_eff": 1143.8,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1994
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.5802,
      "conf_low": 0.4951,
      "estimate": 0.539,
      "line": "ANES",
      "n": 1326,
      "n_eff": 1069.8,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1996
    },
    {
      "basis": "Left out: telephone or mixed-mode study",
      "conf_high": null,
      "conf_low": null,
      "estimate": null,
      "line": "ANES",
      "n": null,
      "n_eff": null,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 1998
    },
    {
      "basis": "Left out: telephone or mixed-mode study",
      "conf_high": null,
      "conf_low": null,
      "estimate": null,
      "line": "ANES",
      "n": null,
      "n_eff": null,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2000
    },
    {
      "basis": "Left out: telephone or mixed-mode study",
      "conf_high": null,
      "conf_low": null,
      "estimate": null,
      "line": "ANES",
      "n": null,
      "n_eff": null,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2002
    },
    {
      "basis": "All respondents (mode not recorded before 2008)",
      "conf_high": 0.6263,
      "conf_low": 0.5323,
      "estimate": 0.5812,
      "line": "ANES",
      "n": 913,
      "n_eff": 766.2,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2004
    },
    {
      "basis": "Face-to-face respondents",
      "conf_high": 0.6492,
      "conf_low": 0.5736,
      "estimate": 0.6128,
      "line": "ANES",
      "n": 1607,
      "n_eff": 1053,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2008
    },
    {
      "basis": "Face-to-face respondents",
      "conf_high": 0.6702,
      "conf_low": 0.5861,
      "estimate": 0.63,
      "line": "ANES",
      "n": 1454,
      "n_eff": 794.2,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2012
    },
    {
      "basis": "Face-to-face respondents",
      "conf_high": 0.712,
      "conf_low": 0.6234,
      "estimate": 0.6701,
      "line": "ANES",
      "n": 903,
      "n_eff": 598.2,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2016
    },
    {
      "basis": "Face-to-face respondents",
      "conf_high": 0.765,
      "conf_low": 0.6757,
      "estimate": 0.7234,
      "line": "ANES",
      "n": 868,
      "n_eff": 442.3,
      "survey": "ANES",
      "view_id": "inperson",
      "year": 2024
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2295,
      "conf_low": 0.116,
      "estimate": 0.1733,
      "line": "GSS",
      "n": 1345,
      "n_eff": 1122.2,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1974
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2857,
      "conf_low": 0.1756,
      "estimate": 0.2314,
      "line": "GSS",
      "n": 1384,
      "n_eff": 1135.8,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1975
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2718,
      "conf_low": 0.161,
      "estimate": 0.2171,
      "line": "GSS",
      "n": 1393,
      "n_eff": 1137,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1976
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2713,
      "conf_low": 0.1615,
      "estimate": 0.2171,
      "line": "GSS",
      "n": 1440,
      "n_eff": 1159.8,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1977
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2202,
      "conf_low": 0.0917,
      "estimate": 0.1566,
      "line": "GSS",
      "n": 1422,
      "n_eff": 885.4,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1978
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.2063,
      "conf_low": 0.0811,
      "estimate": 0.1443,
      "line": "GSS",
      "n": 1418,
      "n_eff": 940.6,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1980
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3,
      "conf_low": 0.1852,
      "estimate": 0.2435,
      "line": "GSS",
      "n": 1723,
      "n_eff": 1032.1,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1982
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3633,
      "conf_low": 0.1988,
      "estimate": 0.2831,
      "line": "GSS",
      "n": 763,
      "n_eff": 481.8,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1983
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3202,
      "conf_low": 0.1976,
      "estimate": 0.26,
      "line": "GSS",
      "n": 1386,
      "n_eff": 889.2,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1984
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3373,
      "conf_low": 0.218,
      "estimate": 0.2787,
      "line": "GSS",
      "n": 1444,
      "n_eff": 918.6,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1985
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3625,
      "conf_low": 0.2571,
      "estimate": 0.3107,
      "line": "GSS",
      "n": 1390,
      "n_eff": 1131.6,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1986
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3576,
      "conf_low": 0.2517,
      "estimate": 0.3056,
      "line": "GSS",
      "n": 1666,
      "n_eff": 1125.7,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1987
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3484,
      "conf_low": 0.2424,
      "estimate": 0.2963,
      "line": "GSS",
      "n": 1411,
      "n_eff": 1139.1,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1988
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3215,
      "conf_low": 0.2131,
      "estimate": 0.2682,
      "line": "GSS",
      "n": 1429,
      "n_eff": 1127.4,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1989
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3463,
      "conf_low": 0.2341,
      "estimate": 0.2912,
      "line": "GSS",
      "n": 1301,
      "n_eff": 1023.1,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1990
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3099,
      "conf_low": 0.1996,
      "estimate": 0.2556,
      "line": "GSS",
      "n": 1443,
      "n_eff": 1105.1,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1991
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3846,
      "conf_low": 0.2839,
      "estimate": 0.3352,
      "line": "GSS",
      "n": 1528,
      "n_eff": 1195.9,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1993
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.4087,
      "conf_low": 0.3368,
      "estimate": 0.3733,
      "line": "GSS",
      "n": 2806,
      "n_eff": 2204,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1994
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.4189,
      "conf_low": 0.3471,
      "estimate": 0.3836,
      "line": "GSS",
      "n": 2702,
      "n_eff": 2168.2,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1996
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3983,
      "conf_low": 0.3227,
      "estimate": 0.3611,
      "line": "GSS",
      "n": 2622,
      "n_eff": 2032.6,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 1998
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.3809,
      "conf_low": 0.3042,
      "estimate": 0.3431,
      "line": "GSS",
      "n": 2593,
      "n_eff": 2038.4,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2000
    },
    {
      "basis": "All respondents (no mode variable before 2004)",
      "conf_high": 0.4237,
      "conf_low": 0.3135,
      "estimate": 0.3699,
      "line": "GSS",
      "n": 1299,
      "n_eff": 944.3,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2002
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.4966,
      "conf_low": 0.382,
      "estimate": 0.4411,
      "line": "GSS",
      "n": 1025,
      "n_eff": 760.8,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2004
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.4936,
      "conf_low": 0.4356,
      "estimate": 0.4651,
      "line": "GSS",
      "n": 3972,
      "n_eff": 2811.5,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2006
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.5064,
      "conf_low": 0.4166,
      "estimate": 0.4627,
      "line": "GSS",
      "n": 1667,
      "n_eff": 1180,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2008
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.5368,
      "conf_low": 0.4472,
      "estimate": 0.4933,
      "line": "GSS",
      "n": 1706,
      "n_eff": 1099.7,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2010
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.5178,
      "conf_low": 0.422,
      "estimate": 0.4713,
      "line": "GSS",
      "n": 1579,
      "n_eff": 1016.3,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2012
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.5222,
      "conf_low": 0.4448,
      "estimate": 0.4845,
      "line": "GSS",
      "n": 2054,
      "n_eff": 1503.2,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2014
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.5432,
      "conf_low": 0.4716,
      "estimate": 0.5083,
      "line": "GSS",
      "n": 2487,
      "n_eff": 1650.5,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2016
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.593,
      "conf_low": 0.5137,
      "estimate": 0.5546,
      "line": "GSS",
      "n": 1920,
      "n_eff": 1176.5,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2018
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.6368,
      "conf_low": 0.5281,
      "estimate": 0.5851,
      "line": "GSS",
      "n": 1424,
      "n_eff": 565.5,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2022
    },
    {
      "basis": "In-person respondents",
      "conf_high": 0.6149,
      "conf_low": 0.4982,
      "estimate": 0.5593,
      "line": "GSS",
      "n": 1029,
      "n_eff": 536.4,
      "survey": "GSS",
      "view_id": "inperson",
      "year": 2024
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2371,
      "conf_low": 0.072,
      "estimate": 0.1545,
      "line": "vs. GSS",
      "n": 2485,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1974
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2304,
      "conf_low": 0.0883,
      "estimate": 0.1593,
      "line": "vs. GSS",
      "n": 2890,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1976
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.271,
      "conf_low": 0.117,
      "estimate": 0.194,
      "line": "vs. GSS",
      "n": 3080,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1978
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.3253,
      "conf_low": 0.1616,
      "estimate": 0.2434,
      "line": "vs. GSS",
      "n": 2422,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1980
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2503,
      "conf_low": 0.0919,
      "estimate": 0.1711,
      "line": "vs. GSS",
      "n": 2614,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1982
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.222,
      "conf_low": 0.0737,
      "estimate": 0.1478,
      "line": "vs. GSS",
      "n": 2932,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1984
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1204,
      "conf_low": -0.0148,
      "estimate": 0.0528,
      "line": "vs. GSS",
      "n": 3012,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1986
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1768,
      "conf_low": 0.0395,
      "estimate": 0.1081,
      "line": "vs. GSS",
      "n": 2830,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1988
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1233,
      "conf_low": -0.0243,
      "estimate": 0.0495,
      "line": "vs. GSS",
      "n": 2616,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1990
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1881,
      "conf_low": 0.0756,
      "estimate": 0.1318,
      "line": "vs. GSS",
      "n": 4204,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1994
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2112,
      "conf_low": 0.0998,
      "estimate": 0.1555,
      "line": "vs. GSS",
      "n": 4028,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1996
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1468,
      "conf_low": 0.015,
      "estimate": 0.0809,
      "line": "vs. GSS",
      "n": 3634,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 1998
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1983,
      "conf_low": 0.0457,
      "estimate": 0.122,
      "line": "vs. GSS",
      "n": 3262,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2000
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2223,
      "conf_low": 0.0736,
      "estimate": 0.1479,
      "line": "vs. GSS",
      "n": 2522,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2002
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.2212,
      "conf_low": 0.0807,
      "estimate": 0.151,
      "line": "vs. GSS",
      "n": 2202,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2004
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1853,
      "conf_low": 0.0733,
      "estimate": 0.1293,
      "line": "vs. GSS",
      "n": 3497,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2008
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1935,
      "conf_low": 0.0928,
      "estimate": 0.1432,
      "line": "vs. GSS",
      "n": 7103,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2012
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.238,
      "conf_low": 0.1568,
      "estimate": 0.1974,
      "line": "vs. GSS",
      "n": 5966,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2016
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1276,
      "conf_low": 0.0559,
      "estimate": 0.0917,
      "line": "vs. GSS",
      "n": 7778,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2024
    },
    {
      "basis": "ANES face-to-face and GSS in-person respondents",
      "conf_high": 0.2088,
      "conf_low": 0.0915,
      "estimate": 0.1501,
      "line": "vs. GSS in person",
      "n": 3274,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2008
    },
    {
      "basis": "ANES face-to-face and GSS in-person respondents",
      "conf_high": 0.2224,
      "conf_low": 0.095,
      "estimate": 0.1587,
      "line": "vs. GSS in person",
      "n": 3033,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2012
    },
    {
      "basis": "ANES face-to-face and GSS in-person respondents",
      "conf_high": 0.2187,
      "conf_low": 0.1048,
      "estimate": 0.1618,
      "line": "vs. GSS in person",
      "n": 3390,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2016
    },
    {
      "basis": "ANES face-to-face and GSS in-person respondents",
      "conf_high": 0.2375,
      "conf_low": 0.0907,
      "estimate": 0.1641,
      "line": "vs. GSS in person",
      "n": 1897,
      "n_eff": null,
      "survey": "ANES minus GSS",
      "view_id": "diff",
      "year": 2024
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": -0.0262,
      "conf_low": -0.1031,
      "estimate": -0.0646,
      "line": "vs. CES",
      "n": 31546,
      "n_eff": null,
      "survey": "ANES minus CES",
      "view_id": "diff",
      "year": 2008
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.0087,
      "conf_low": -0.0391,
      "estimate": -0.0152,
      "line": "vs. CES",
      "n": 54260,
      "n_eff": null,
      "survey": "ANES minus CES",
      "view_id": "diff",
      "year": 2012
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.1295,
      "conf_low": 0.0853,
      "estimate": 0.1074,
      "line": "vs. CES",
      "n": 62086,
      "n_eff": null,
      "survey": "ANES minus CES",
      "view_id": "diff",
      "year": 2016
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.0668,
      "conf_low": 0.0356,
      "estimate": 0.0512,
      "line": "vs. CES",
      "n": 62436,
      "n_eff": null,
      "survey": "ANES minus CES",
      "view_id": "diff",
      "year": 2020
    },
    {
      "basis": "All interviews in both surveys",
      "conf_high": 0.0248,
      "conf_low": -0.0172,
      "estimate": 0.0038,
      "line": "vs. CES",
      "n": 60551,
      "n_eff": null,
      "survey": "ANES minus CES",
      "view_id": "diff",
      "year": 2024
    }
  ],
  "id": "staircase",
  "notes": [
    "The in-person view keeps all respondents in the years before the file records interview mode; the methods note of the chapter Party and ideology gives its rules.",
    "In the all-interviews view, rings mark ANES 2000 and GSS 1983, 2002 and 2004. The label is the share of respondents with a party answer who placed themselves on the ideology scale, fewer than in the years around them, so each ringed point rests on fewer respondents.",
    "A year is drawn only when it has at least 150 respondents who answered both questions and passes a second size condition given in the methods note of the chapter Party and ideology. A difference needs both surveys to pass."
  ],
  "source": "ANES Cumulative Data File, 1972-2024 (weight VCF0009z; weight_ftf for the in-person view); GSS, 1974-2024 (weight_use); CES cumulative file, 2006-2024 (weight); all estimates weighted",
  "spec": {
    "annotations": [
      {
        "label": "1980 to 1988",
        "type": "band",
        "x1": 1980,
        "x2": 1988
      },
      {
        "label": "2020 to 2024",
        "type": "band",
        "x1": 2020,
        "x2": 2024
      }
    ],
    "colors": {
      "ANES": "cat1",
      "CES": "cat3",
      "GSS": "cat2"
    },
    "hi": "conf_high",
    "lo": "conf_low",
    "n": "n",
    "series": "line",
    "x": "year",
    "xDomain": [
      1972,
      2024
    ],
    "xLabel": "Survey year",
    "y": "estimate",
    "yDomain": [
      0,
      0.8
    ],
    "yFormat": {
      "digits": 1
    },
    "yLabel": "Correlation between party and ideology"
  },
  "subtitle": "Weighted correlation between party identification (seven-point scale, leaners kept) and liberal-conservative self-placement, respondents who answered both, ANES 1972 to 2024, GSS 1974 to 2024, CES 2006 to 2024, with 95% intervals; the differences view plots the ANES value minus each other survey's value in the same year",
  "table": {
    "columns": [
      {
        "key": "survey",
        "label": "Survey"
      },
      {
        "key": "basis",
        "label": "Respondents included"
      },
      {
        "key": "year",
        "label": "Year"
      },
      {
        "format": {
          "digits": 2,
          "signed": true
        },
        "key": "estimate",
        "label": "Estimate"
      },
      {
        "format": {
          "digits": 2,
          "signed": true
        },
        "key": "conf_low",
        "label": "Interval low"
      },
      {
        "format": {
          "digits": 2,
          "signed": true
        },
        "key": "conf_high",
        "label": "Interval high"
      },
      {
        "format": {
          "digits": 0,
          "thousands": true
        },
        "key": "n",
        "label": "Respondents"
      },
      {
        "format": {
          "digits": 0,
          "thousands": true
        },
        "key": "n_eff",
        "label": "Effective n"
      }
    ]
  },
  "title": "The party-ideology correlation ended higher than it began on all three surveys",
  "type": "line",
  "views": [
    {
      "filter": {
        "view_id": "all"
      },
      "id": "all",
      "label": "All interviews",
      "spec": {
        "annotations": [
          {
            "label": "1980 to 1988",
            "type": "band",
            "x1": 1980,
            "x2": 1988
          },
          {
            "label": "2020 to 2024",
            "type": "band",
            "x1": 2020,
            "x2": 2024
          },
          {
            "label": "34%",
            "series": "ANES",
            "type": "point",
            "x": 2000,
            "y": 0.4651
          },
          {
            "label": "48%",
            "series": "GSS",
            "type": "point",
            "x": 1983,
            "y": 0.2831
          },
          {
            "label": "48%",
            "series": "GSS",
            "type": "point",
            "x": 2002,
            "y": 0.3699
          },
          {
            "label": "46%",
            "series": "GSS",
            "type": "point",
            "x": 2004,
            "y": 0.4303
          }
        ]
      }
    },
    {
      "caption": "This view removes web interviews and, where the files record them, telephone interviews. The GSS line still runs below the ANES line, and the GSS in-person estimate for 2024 is level with the one for 2018, at {fact:gss_ip_2018} in 2018 and {fact:gss_ip_2024} in 2024. The ANES line uses face-to-face respondents in 2008, 2012, 2016 and 2024 and all respondents in the earlier years except 1998, 2000 and 2002, whose interviews were wholly or partly by telephone.",
      "filter": {
        "view_id": "inperson"
      },
      "id": "inperson",
      "label": "In person only",
      "spec": {
        "breaks": [
          2020
        ]
      }
    },
    {
      "caption": "The ANES correlation is above the GSS correlation in every year in which both surveys ran, and the interval of the difference is above zero in {fact:off_gss_sig} of the {fact:off_gss_k} years. The horizontal rule at zero marks no difference, and the ANES minus CES line crosses it. The in-person line compares face-to-face ANES respondents with in-person GSS respondents in the {fact:off_inperson_k} years in which both files identify them. Each point is the difference of two independent yearly estimates, and its band combines their standard errors.",
      "filter": {
        "view_id": "diff"
      },
      "id": "diff",
      "label": "Differences between surveys",
      "spec": {
        "annotations": [
          {
            "type": "y-rule",
            "y": 0
          }
        ],
        "colors": {
          "vs. CES": "cat3",
          "vs. GSS": "cat2",
          "vs. GSS in person": "cat2"
        },
        "dashed": [
          "vs. GSS in person"
        ],
        "yDomain": [
          -0.15,
          0.35
        ],
        "yFormat": {
          "digits": 2,
          "signed": true
        },
        "yLabel": "Difference in correlation (ANES minus other survey)"
      },
      "title": "The ANES correlation runs above the GSS correlation in every matched year"
    }
  ],
  "width": "wide"
}