Answer:
The perfect and perhaps most commonly known is former U.S. President Richard Nixon.
Explanation:
Nixon was President of the United States from 1969 to 1974, he was elected for two periods, but he only finished one and less than half the other one. The reason is that he was embroiled in the Watergate scandal: an espionage campaign of the Democratic Party from Republican officials, including Nixon himself.
With these acts, Nixon, as the highest public official in the nation, failed to show probity, and dishonored the office of the president. He was quick to renounce the presidency, and would have faced legal challenges if not for his Vice President, Gerald Ford, who became president as his replacement, and issued him a presidential pardon immediately after.
