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Ford's Communism Conundrum -- Gerald Ford stumbled in a 1976 debate with Jimmy Carter when he said there was no Soviet Union domination of Eastern Europe at the time and "there never will be under a Ford administration." When asked to clarify, Ford dug an ever deeper hole, saying each of those countries was independent and autonomous.
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Stockdale's 'Why Am I Here?' -- Adm. James Stockdale, a prisoner of war in Vietnam, introduced himself to the country during the 1992 vice presidential debate by joking "Who am I? Why am I here?" The audience laughed. But the strange use of a rhetorical question became known as the "Stockdale Moment."
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Bush's Impatience -- When asked during the second presidential debate in 1992 how the recession had personally affected him, President George H.W. Bush tucked his suit, checked his watch and gave a lengthy answer that failed to answer the question directly. The move was widely panned as a sign of boredom and impatience with a question that weighed heavily on Americans' minds.
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Gore's Sighing -- During the presidential debates in 2000, Vice President Al Gore was widely criticized for sighing loudly and repeatedly in frustration as then-Texas Gov. George W. Bush would make points. The sighs made Gore appear condescending, and were lampooned on "Saturday Night Live."
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Brewer's Brain Freeze -- Arizona Gov. Jan Brewer suffered what Newsweek called a "brain freeze" during a debate with Democratic opponent state Attorney General Terry Goddard in September 2010. She "offered only vague, nonsensical statements as she giggled and tried to recall her train of thought," the magazine said.