"Bradley effect" meaning in English

{
  "etymology_text": "Named after Los Angeles Mayor Tom Bradley, an African-American who lost the 1982 California governor's race despite being ahead in voter polls going into the elections.",
  "forms": [
    {
      "form": "the Bradley effect",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1"
      },
      "expansion": "the Bradley effect",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Politics",
          "orig": "en:Politics",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A theory concerning observed discrepancies between opinion polls and election outcomes, according to which some white voters who intend to vote for a white candidate may tell pollsters that they are undecided or likely to vote for a non-white candidate, for fear of being accused of racism."
      ],
      "id": "en-Bradley_effect-en-name-XY-iBk03",
      "links": [
        [
          "politics",
          "politics"
        ],
        [
          "discrepancies",
          "discrepancy"
        ],
        [
          "opinion poll",
          "opinion poll"
        ],
        [
          "election",
          "election"
        ],
        [
          "outcome",
          "outcome"
        ],
        [
          "white",
          "white"
        ],
        [
          "candidate",
          "candidate"
        ],
        [
          "racism",
          "racism"
        ]
      ],
      "raw_glosses": [
        "(US, politics) A theory concerning observed discrepancies between opinion polls and election outcomes, according to which some white voters who intend to vote for a white candidate may tell pollsters that they are undecided or likely to vote for a non-white candidate, for fear of being accused of racism."
      ],
      "synonyms": [
        {
          "word": "Wilder effect"
        }
      ],
      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "politics"
      ],
      "wikipedia": [
        "Bradley effect"
      ]
    }
  ],
  "word": "Bradley effect"
}

{
  "etymology_text": "Named after Los Angeles Mayor Tom Bradley, an African-American who lost the 1982 California governor's race despite being ahead in voter polls going into the elections.",
  "forms": [
    {
      "form": "the Bradley effect",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1"
      },
      "expansion": "the Bradley effect",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "American English",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Politics"
      ],
      "glosses": [
        "A theory concerning observed discrepancies between opinion polls and election outcomes, according to which some white voters who intend to vote for a white candidate may tell pollsters that they are undecided or likely to vote for a non-white candidate, for fear of being accused of racism."
      ],
      "links": [
        [
          "politics",
          "politics"
        ],
        [
          "discrepancies",
          "discrepancy"
        ],
        [
          "opinion poll",
          "opinion poll"
        ],
        [
          "election",
          "election"
        ],
        [
          "outcome",
          "outcome"
        ],
        [
          "white",
          "white"
        ],
        [
          "candidate",
          "candidate"
        ],
        [
          "racism",
          "racism"
        ]
      ],
      "raw_glosses": [
        "(US, politics) A theory concerning observed discrepancies between opinion polls and election outcomes, according to which some white voters who intend to vote for a white candidate may tell pollsters that they are undecided or likely to vote for a non-white candidate, for fear of being accused of racism."
      ],
      "synonyms": [
        {
          "word": "Wilder effect"
        }
      ],
      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "politics"
      ],
      "wikipedia": [
        "Bradley effect"
      ]
    }
  ],
  "word": "Bradley effect"
}