An election was held on November 3 and December 8, 1987, to elect the 39th mayor of San Francisco. Dianne Feinstein, then the incumbent, had served as mayor since the 1978 assassination of mayor George Moscone and supervisor Harvey Milk and had been elected to full terms in 1979 and 1983, and was thus term-limited. Then-California State Assembly member Art Agnos came from behind to defeat Supervisor John Molinari, garnering nearly 70 percent of the vote.
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