Ed Lee, named to the post after Gavin Newsom became lieutenant governor, had said he wouldn't seek election. But on Monday, he filed papers to run, saying many residents and some officials persuaded him.
Mayor Ed Lee, who in January promised to fill out his predecessor's term as a caretaker and swore off aspirations to run for the job this fall, on Monday announced plans to enter the race, upending a crowded political field.
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