Lacey, 53, was considered most likely to get Cooley's support for the appointment. She's also a Democrat and an African-American, which would have helped with the Board of Supervisors, which is responsible for filling a D.A. vacancy and is majority Democrat.
But she's not a politician, and has no public profile to speak of. (She's so under the radar, in fact, that we couldn't find a picture of her.) So when Cooley lost to Kamala Harris, some folks within the office questioned whether she would want to launch a campaign for the 2012 election.