Jiménez had 10,298 votes (53%) to Anderson's 9,102 (46.9%), according to KQED's 12:52 a.m. update. ABC7 showed the same totals.
KQED notes the Richmond Progressive Alliance has shaped city politics for two decades, from tenant protections to battles with Chevron, which runs the city's refinery. The race put that progressive experiment in the spotlight as Democrats nationally argue over the party's direction.
Also in Richmond and West County
Richmond's Measure Q, EMS bonds needing two-thirds, had 69% yes, per ABC7. NBC Bay Area said key Contra Costa decisions included the new Richmond mayor and a measure limiting rent increases in San Pablo.
A roughly 1,200-vote lead could still narrow as late mail ballots are counted.
All results are unofficial election-night and early-morning counts as of Wednesday, Nov. 4. Counties keep counting mail and provisional ballots for days, and certification comes later, so margins can shift, especially in close contests.