"Tricky Dick" meaning in English

{
  "etymology_text": "Coined in the 1950 Californian Senate election, due to allegations Nixon was deliberately misrepresenting himself as a Democrat. Later associated with the Watergate scandal.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "source": "w"
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          "ref": "1950 June 5, Veterans Democratic Committee, “Warning to All Democrats!”, in Los Angeles Daily News:",
          "text": "Look at “Tricky Dick” Nixon's Republican Record!",
          "type": "quote"
        }
      ],
      "glosses": [
        "Richard Nixon."
      ],
      "id": "en-Tricky_Dick-en-name-46~kB-vR",
      "raw_glosses": [
        "(slang, historical) Richard Nixon."
      ],
      "tags": [
        "historical",
        "slang"
      ],
      "wikipedia": [
        "1950 United States Senate election in California"
      ]
    }
  ],
  "word": "Tricky Dick"
}

{
  "etymology_text": "Coined in the 1950 Californian Senate election, due to allegations Nixon was deliberately misrepresenting himself as a Democrat. Later associated with the Watergate scandal.",
  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        "English proper nouns",
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        "English terms with quotations",
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        "en:Individuals",
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          "ref": "1950 June 5, Veterans Democratic Committee, “Warning to All Democrats!”, in Los Angeles Daily News:",
          "text": "Look at “Tricky Dick” Nixon's Republican Record!",
          "type": "quote"
        }
      ],
      "glosses": [
        "Richard Nixon."
      ],
      "raw_glosses": [
        "(slang, historical) Richard Nixon."
      ],
      "tags": [
        "historical",
        "slang"
      ],
      "wikipedia": [
        "1950 United States Senate election in California"
      ]
    }
  ],
  "word": "Tricky Dick"
}