In 1972, South Dakota Sen. George S. McGovern, right, had narrowly won the Democratic presidential nomination and, after being turned down by a few other contenders, settled on Missouri Sen. Thomas F. Eagleton, middle, as his running mate. Almost as an afterthought, Frank Mankiewicz, a top McGovern advisor, asked Eagleton "kind of laughingly" whether there was anything in his past that "might give us trouble." Eagleton said the closet was empty -- omitting any mention of his three hospital stays for psychiatric treatment, including two rounds of electroshock therapy. Two and a half weeks later, McGovern booted Eagleton from the ticket, accelerating an epic election day loss that effectively ended McGovern's national political career.
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