The best and most correct answer among the choices provided by the question is the first choice "blue-collar workers"
In the general election, Nixon emphasized "law and order," positioning himself as the champion of what he called the "silent majority." Running well ahead of his opponent, incumbent Vice President Hubert Humphrey, his support slipped in the polls following his refusal to partake in presidential debates, and following an announcement from President Lyndon B. Johnson that a halt in bombing of Vietnam had been negotiated.
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