Final answer:
Richard Nixon was the first man to take office without winning a single vote in the national election.
Step-by-step explanation:
The term that best completes the statement is Nixon. Richard Nixon was the first man to take office without winning a single vote in the national election. He became the 37th President of the United States after his predecessor, Lyndon B. Johnson, chose not to seek re-election.
Learn more about U.S. Presidents