"brokered convention" meaning in English

{
  "forms": [
    {
      "form": "brokered conventions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "brokered convention (plural brokered conventions)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "US politics",
          "orig": "en:US politics",
          "parents": [
            "Politics",
            "United States",
            "Society",
            "Countries",
            "Countries in North America",
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        }
      ],
      "glosses": [
        "A political convention held during a presidential election when a political party fails to choose a nominee on the first round of delegate voting at the party's nominating convention."
      ],
      "id": "en-brokered_convention-en-noun-Y8IOhFhX",
      "raw_glosses": [
        "(US politics) A political convention held during a presidential election when a political party fails to choose a nominee on the first round of delegate voting at the party's nominating convention."
      ],
      "synonyms": [
        {
          "word": "open convention"
        }
      ],
      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "politics"
      ],
      "wikipedia": [
        "brokered convention"
      ]
    }
  ],
  "word": "brokered convention"
}

{
  "forms": [
    {
      "form": "brokered conventions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "brokered convention (plural brokered conventions)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:US politics"
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      "glosses": [
        "A political convention held during a presidential election when a political party fails to choose a nominee on the first round of delegate voting at the party's nominating convention."
      ],
      "raw_glosses": [
        "(US politics) A political convention held during a presidential election when a political party fails to choose a nominee on the first round of delegate voting at the party's nominating convention."
      ],
      "synonyms": [
        {
          "word": "open convention"
        }
      ],
      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "politics"
      ],
      "wikipedia": [
        "brokered convention"
      ]
    }
  ],
  "word": "brokered convention"
}